Due to the inability of manufacturing a single monolithic mirror at the 10-meter scales,segmented mirrors have become indispensable tools in modern astronomical research.However,to match the imaging performance of the...Due to the inability of manufacturing a single monolithic mirror at the 10-meter scales,segmented mirrors have become indispensable tools in modern astronomical research.However,to match the imaging performance of the monolithic counterpart,the sub-mirrors must maintain precise co-phasing.Piston error critically degrades segmented mirror imaging quality,necessitating efficient and precise detection.To ad-dress the limitations that the conventional circular-aperture diffraction with two-wavelength algorithm is sus-ceptible to decentration errors,and the traditional convolutional neural networks(CNNs)struggle to capture global features under large-range piston errors due to their restricted local receptive fields,this paper pro-poses a method that integrates extended Young’s interference principles with a Vision Transformer(ViT)to detect piston error.By suppressing decentration error interference through two symmetrically arranged aper-tures and extending the measurement range to±7.95μm via a two-wavelength(589 nm/600 nm)algorithm.This approach exploits ViT’s self-attention mechanism to model global characteristics of interference fringes.Unlike CNNs constrained by local convolutional kernels,the ViT significantly improves sensitivity to inter-ferogram periodicity.The simulation results demonstrate that the proposed method achieves a measurement accuracy of 5 nm(0.0083λ0)across the range of±7.95μm,while maintaining an accuracy exceeding 95%in the presence of Gaussian noise(SNR≥15 dB),Poisson noise(λ≥9 photons/pixel),and sub-mirror gap er-ror(Egap≤0.2)interference.Moreover,the detection speed shows significant improvement compared to the cross-correlation algorithm.This study establishes an accurate,robust framework for segmented mirror error detection,advancing high-precision astronomical observation.展开更多
Introduction,Breast cancer is the most common cancer type in adolescents and young adults<40 years of age,accounting for 30%of cancers in this age group1.Breast cancer in the young presents significant challenges f...Introduction,Breast cancer is the most common cancer type in adolescents and young adults<40 years of age,accounting for 30%of cancers in this age group1.Breast cancer in the young presents significant challenges for patients and society,including more aggressive tumor biology,poor prognosis,genetic susceptibility,fertility preservation,and complex psychosocial issues.Moreover,because of the markedly younger median age of breast cancer,the proportion of young breast cancer patients in China is significantly higher than Western countries2.The first Young Breast Cancer in China(YBCC)consensus meeting was held in Guangzhou,China in December 2021 to address exclusive challenges and requirements facing young patients with breast cancer.Chinese medical experts from multiple specialties had an extensive discussion and formulated a consensus over several hot topics in young patients with breast cancer.The“Expert Consensus on the Diagnosis and Treatment of Young Breast Cancer in China(2022 edition)”published in the Chinese Medical Journal has garnered significant attention3,highlighting enormous interest in the YBCC consensus in the medical community and public.展开更多
With the transformation from websites to Internet platforms, Chinese young netizens (born in 1990-2005) have become key subjects in the evolution of cyber-nationalism. Based on survey data, this study classifies their...With the transformation from websites to Internet platforms, Chinese young netizens (born in 1990-2005) have become key subjects in the evolution of cyber-nationalism. Based on survey data, this study classifies their nationalism into four types and explores its transformation alongside globalization cognition. The result shows that moderate nationalism is the mainstream. This has raised their attention to globalization, with greater focus on relations between China and developing countries, and nations along the Belt and Road Initiative. Their personal experiences and cultural exposure foster a more inclusive global vision, shaping the evolution of nationalism and global dialogue.展开更多
Objective To determine the proportions of drug-resistant tuberculosis(TB),its trends,and the drug resistance-conferring mutations among patients with pulmonary TB aged 10-24 years in China.Methods The data of patients...Objective To determine the proportions of drug-resistant tuberculosis(TB),its trends,and the drug resistance-conferring mutations among patients with pulmonary TB aged 10-24 years in China.Methods The data of patients with pulmonary TB were retrieved from a national drug-resistant TB survey for analysis.Joinpoint regression software was used to analyze time trends.We also used whole genome sequencing to analyze the lineages and drug resistance-conferring mutations of 621 isolates.Results Among 4,235 patients with pulmonary TB,the proportion of new cases of multidrug-resistant tuberculosis(MDR-TB)was 3.18%(95%confidence interval[CI]:2.37-4.15)for adolescents and 3.76%(95%CI:3.03-4.60)for young adults;for previously treated patients,MDR-TB accounted for 11.25%(95%CI:5.28-20.28)of adolescents and 11.05%(95%CI:6.88-16.55)of young adults.The proportion of patients with MDR-TB remained stable among both new and previously treated patients aged 10-24 years during the study period.Through whole genome sequencing,we found that the most common mutations in the MDR-TB strains were Ser315Thr in the katG gene(71.74%)and Ser450Leu in the rpoB gene(50.00%).Conclusion This study revealed a high proportion of MDR-TB among adolescents and young adults,indicating that urgent and comprehensive measures are needed to reduce the emergence and transmission of drug-resistant TB among this population in China.展开更多
Conductive hydrogel-based stretchable electronics have been extensively investigated,among which strain sensors are the most prominently studied.While the mechanical properties significantly affect the performance of ...Conductive hydrogel-based stretchable electronics have been extensively investigated,among which strain sensors are the most prominently studied.While the mechanical properties significantly affect the performance of these devices,the systematic correlation between specific mechanical parameters and sensing performance remains rarely explored.This work compares the influences of Young’s modulus and mechanical hysteresis on the sensing performance between highly entangled PAM-Li and double-network PAM-Li-Agar-3 strain sensors.Owing to the brittle agar network,which imparts a higher Young’s modulus and pronounced mechanical hysteresis to the double-network PAMLi-Agar-3 hydrogel,the corresponding sensor requires a greater driving force for deformation and yields signals with poor reproducibility.In comparison,the PAM-Li hydrogel,characterized by highly entangled polymer chains,exhibits a lower Young’s modulus and negligible mechanical hysteresis.Consequently,signals from the PAM-Li strain sensor demonstrate enhanced sensitivity and stability.Therefore,this work demonstrates that a low Young’s modulus and minimal mechanical hysteresis are critical factors for achieving superior sensing performance in strain sensors,as systematically validated through comparative analyses across diverse application scenarios.展开更多
The uniquely Chinese educator spirit provides a fundamental guideline for teachers in the new era to fulfill their mission of moral education and talent cultivation.There exists a profound alignment between the teachi...The uniquely Chinese educator spirit provides a fundamental guideline for teachers in the new era to fulfill their mission of moral education and talent cultivation.There exists a profound alignment between the teaching innovation practices of young teachers and the core tenets of the educator spirit.Consequently,a three-dimensional framework for systematic guidance can be constructed focusing on values,wisdom,and resilience.Guided by ideals,beliefs,and moral integrity,the foundational values of teaching innovation are solidified,ensuring it remains anchored to the direction of nurturing students.Through educational wisdom and benevolence,the practical rationality of innovation is refined,propelling teaching toward greater scientific rigor and humanistic care.展开更多
Welcome to the Special Issue highlighting the latest innovative research conducted by young scientists who have received the 2023 or the 2024 Innovative Young Scientist Awards.Established in 2023 by the University of ...Welcome to the Special Issue highlighting the latest innovative research conducted by young scientists who have received the 2023 or the 2024 Innovative Young Scientist Awards.Established in 2023 by the University of Science and Technology Beijing,the Innovative Young Scientist Award recognizes exceptional young scientists who have demonstrated sustained engagement in frontier research across mineral science,metallurgy,and materials science,with significant scientific contributions.Committed to fostering the next generation of scientific leaders,the award supports researchers aged under 45.Since its inception,the honor has been bestowed upon 20 recipients,with 10 outstanding researchers selected annually from a competitive pool of approximately 100 applicants.展开更多
BACKGROUND Acute myocardial infarction(AMI)is rare among patients aged≤40 years but imposes significant morbidity,psychological distress,and economic burden.App-roximately 10%of AMI hospitalizations involve patients ...BACKGROUND Acute myocardial infarction(AMI)is rare among patients aged≤40 years but imposes significant morbidity,psychological distress,and economic burden.App-roximately 10%of AMI hospitalizations involve patients under 45 years,under-scoring the need to study this group.Compared to older patients,young AMI pa-tients exhibit fewer traditional risk factors(e.g.,hypertension,diabetes)but higher rates of smoking,obesity,and non-atherosclerotic causes like spontaneous coro-nary artery dissection or coronary spasm,often linked to substance use.Global trends show rising obesity and dyslipidemia in young populations,with smoking contributing to 62%–90%of AMI cases in this age group.Family history of coro-nary artery disease also elevates risk,particularly in acute coronary syndrome.Studies like Bhardwaj et al report that young AMI patients are predominantly male with single-vessel disease,unlike the multi-vessel disease typical in older cohorts.This study characterizes AMI in young adults(≤40 years)at a single center,focusing on presentation,risk factors,angiographic findings,and manage-ment to guide preventive strategies.AIM To describe the characteristics of AMI in young patients,including presentation,risk factors,coronary angiography(CAG)findings,and management strategies.METHODS This retrospective cross-sectional study analyzed 91 patients aged 20–40 years diagnosed with AMI at Mouwasat Hospital Dammam,from June 2020 to May 2023.Data on clinical presentation,cardiovascular risk factors,CAG findings,and treatments were collected from medical records.Descriptive statistics were used to summarize findings.RESULTS Of 91 patients(96.7%male,mean age 35.9 years±3.4 years),43.9%were obese(body mass index>30 kg/m^(2)).Hyperlipidemia was the most prevalent risk factor(69.2%),followed by smoking(49.5%),diabetes mellitus(33.0%),and hypertension(26.4%).ST-elevation myocardial infarction(STEMI)was the most common presentation(57.1%).The left anterior descending artery was frequently affected(78.0%),with single-vessel disease predominant(72.5%).Most patients underwent percutaneous coronary intervention(PCI)(74.7%),while 8.8%required surgery.CONCLUSION Young AMI patients are predominantly obese males with hyperlipidemia and smoking as key risk factors,pre-senting with STEMI and single-vessel disease amenable to PCI.展开更多
The global issue of climate change presents young entrepreneurs with opportunities to explore new business models.FACED with the severe challenges presented by global climate change,pursuing a green lifestyle is a way...The global issue of climate change presents young entrepreneurs with opportunities to explore new business models.FACED with the severe challenges presented by global climate change,pursuing a green lifestyle is a way to achieve sustainable development.Many countries are exploring ways to reach a balance between economic development and environmental protection.展开更多
Introduction: Considering a disease of postmenopausal women, there is a noted trend of increasing breast cancer cases among premenopausal women. Our study aimed to determine the main risk factors for breast cancer in ...Introduction: Considering a disease of postmenopausal women, there is a noted trend of increasing breast cancer cases among premenopausal women. Our study aimed to determine the main risk factors for breast cancer in women aged 40 and under. Materials and Methods: This was a case-control study with exhaustive sampling of all respondents with histological proof over a 12-month period, matched by age. For all statistical tests, we used a significance threshold of 5%. Additionally provided are the ORs and their 95% confidence intervals, the mean, and standard deviation. Results: We collected 65 cases and 130 controls. The frequency of breast cancer in women aged 40 and under was 35.5%. The mean age was 35.6 ± 4.5 years among cases compared to 32.1 ± 7.9 years among controls. A significantly positive association was detected in both univariate and multivariate analysis between age and breast cancer [(OR) = 10.30;95% CI (1.99 - 53.23)] and [(OR) = 7.53;95% CI (1.82 - 31.23)];family history of breast cancer and breast cancer [(OR) = 9.99;95% CI (1.43 - 69.58)];smoking and breast cancer [OR = 13.11;95% CI (1.05 - 163.30)];sedentary lifestyle and breast cancer [OR = 3.36;95% CI (1.01 - 11.17)];and night work and breast cancer [(OR) = 72.05;95% CI (8.15 - 637.25)]. Conclusion: Earlier systematic screening and regular follow-up should be conducted in young women in our context.展开更多
Objectives:This study aimed to generate a theoretical framework based on empirical data to explain the behavioral patterns closely related to young and middle-aged patients with lymphoma throughout the disease.Methods...Objectives:This study aimed to generate a theoretical framework based on empirical data to explain the behavioral patterns closely related to young and middle-aged patients with lymphoma throughout the disease.Methods:This study followed the classic grounded theory methodology,involving procedures such as theoretical sampling,substantive coding,theoretical coding,constant comparison,and memo writing and sorting.Multiple data types were used based on the principle of“all is data,”including 34 participants providing interview data along with observation notes and 40 relevant secondary texts from the“Lymphoma House”network platform and the“Lymphoma House 086”public account.Two autobiographical books written by lymphoma patients were also selected as data resources.Data collection and analysis were conducted in an iterative process until theoretical saturation was reached.The COREQ checklist was followed to report this study.Results:The main concern of middle-aged and young patients with lymphoma was identifiedas restoring normality,while managing uncertainty was the main behavioral pattern for restoring normality.Uncertainty consists of two interrelated types:inherent uncertainty of illness and perceived uncertainty of patients.Four strategies are used to manage uncertainty:reconstructing certainty,adaptive coping,defensive buffering,and compensatory changing.Managing uncertainty is influenced by disease characteristics and perceptions,social resources,and cultural concepts.The consequence of managing uncertainty is reaching a new normality.Conclusions:Pervasive uncertainty significantly affects the daily lives of young and middle-aged patients with lymphoma.Consequently,strategies for managing disease-related uncertainty to sustain normality are commonly observed in this population.This theoretical framework for addressing uncertainty can serve as a foundation for understanding and developing tailored interventions to manage uncertainty.Future research should focus on managing uncertainty to help patients restore normality.展开更多
Objectives:This study aimed to classify young breast cancer patients into distinct ambivalence over emotional expression and to explore the factors influencingthe level of ambivalence over emotional expression.Methods...Objectives:This study aimed to classify young breast cancer patients into distinct ambivalence over emotional expression and to explore the factors influencingthe level of ambivalence over emotional expression.Methods:A total of 217 young breast cancer patients were enrolled from a tertiary Grade A oncology hospital in Tianjin,China,using the convenience sampling method.All participants completed the general questionnaire,Ambivalence over Emotion Expression Questionnaire(AEQ),and Family Adapt-Ability and Cohesion Evaluation Scales-Chinese Version(FACES-CV).We employed exploratory latent profileanalysis for ambivalence over emotional expression profilingand logistic regression analysis to identify the influentialfactors Results:The results of the latent profileanalysis supported the models of four latent profiles,which were definedas“low conflict-lowexpression reflection”(19.2%),“high conflict-high inhibition expression”(43.9%),“moderate conflict-highregret expression”(18.1%),and“moderate conflict-desire understand”(18.8%).Logistic regression revealed that family cohesion,marital status,residence,per capita monthly income,and cancer stage were the influencingfactors of ambivalence over emotional expression in young breast cancer patients(P<0.05)Conclusions:Levels of ambivalence over emotional expression ameast cancer patients with breast cancer were highly heterogeneous.Medical staff should provide psychological counseling and health education tailored to the unique characteristics of emotional expression ambivalence in different patient groups to promote healthy emotional expression among patients.展开更多
Objective:This randomized controlled trial aimed to assess the impact of a targeted educational intervention on the awareness and practice of genetic screening and counseling among young adults in Calabar Municipality...Objective:This randomized controlled trial aimed to assess the impact of a targeted educational intervention on the awareness and practice of genetic screening and counseling among young adults in Calabar Municipality,Cross River State.Materials and Methods:Participants(aged 18-45)were randomly assigned to either an intervention group receiving structured health education or a control group receiving general health information.Stratified randomization was used between the groups.A sample size of 340 participants was recruited to detect a 20%difference in outcomes with 80%power.Data were collected using prevalidated questionnaires at baseline,immediately after the intervention,and at a 3-month follow-up.The intervention consisted of three weekly 90-min educational sessions covering genetics,the benefits of screening,and practical guidance on accessing genetic services.The primary outcomes were changes in awareness and practices related to genetic screening,with secondary outcomes focusing on attitudes and intentions toward genetic counseling.Results:Findings revealed that awareness of genetic screening was higher in the intervention group,with 65.9%of participants aware of early detection,compared to 59.4%in the control group,although the difference was not statistically significant(P=0.23).In terms of practice,42.9%of the intervention group and 40.0%of the control group engaged in genetic screening programs,with no significant difference(P=0.57).Logistic regression analysis highlighted that age,educational level,and knowledge of teratogens were significant predictors of genetic screening awareness.Participants aged 36 years and above were 1.52 times more likely to be aware(odds ratio[OR]=1.52,P=0.003),and those with tertiary education had nearly double the likelihood of awareness(OR=1.96,P<0.001).Conclusion:The study underscores the importance of targeted education in improving genetic screening awareness.展开更多
The association between sugar-sweetened beverages(SSBs)intake and hair loss condition might give scientific support for better dietary practices to prevent hair loss.We aimed to explore the association of SSBs intake ...The association between sugar-sweetened beverages(SSBs)intake and hair loss condition might give scientific support for better dietary practices to prevent hair loss.We aimed to explore the association of SSBs intake with the hair loss condition in women.This online cross-sectional study,conducted from January 2022 to April 2022,recruited 1169 women aged 18-45 years from 31 provinces on mainland of China.We u sed the updated version of the 15-item Beverage Intake Questionnaire(BEVQ-15)to evaluate the usual beverage consumption over the past month and the Hair-Shedding Visual Scale for Asian Women(HSVS-A)to evaluate the extent of hair shedding.We utilized binary logistic regression to assess the association between SSBs intake and hair loss.Among 1169 female participants with an average age of 27.2,there were 211(18.0%)participants with hair loss.Compared with participants who never drank SSBs,those who drank m ore than 7 times/week or 1000 mL/week were more likely to have hair loss,with an adjusted odds ratio(OR)of 2.25(95%confidence interval(CI)=1.32,3.83)or 2.22(95%CI=1.28,3.85).Furthermore,the m ediation effect of anxiety status on the association between SSBs and female hair loss was observed,with a significant indirect effect(β_(indirect)=0.0199,95%CI=0.0032,0.0418).In conclusion,our study showed that w omen who consumed higher amounts of SSBs had an increased risk of hair loss,which might attract more attention from young women and benefit from reducing SSBs consumption.Further longitudinal and interventional studies are still needed to confirm the current association and provide evidenced-based health education.展开更多
Against the backdrop of the Healthy China strategy,the insurance behavior of young consumers presents new characteristics such as enhanced autonomy,a shift toward proactive risk management,stronger personalized demand...Against the backdrop of the Healthy China strategy,the insurance behavior of young consumers presents new characteristics such as enhanced autonomy,a shift toward proactive risk management,stronger personalized demands,and higher expectations for online experiences.In response to changes in young consumers'risk awareness and consumption philosophy,this paper analyzes influencing factors from four dimensions:economic income,risk perception,social environment,and internet penetration.It proposes that insurance companies should focus on digital innovation,precise product development,social platform marketing,and popularization of insurance education,to promote the transformation of young people’s insurance demand from passive risk transfer to proactive long-term planning,and to help the insurance industry and young groups achieve win-win development.展开更多
As an emerging multifunctional metal with the lowest melting point except for mercury,gallium combines a wide range of metallic and non-metallic elements to form advanced semiconductors critically important in cutting...As an emerging multifunctional metal with the lowest melting point except for mercury,gallium combines a wide range of metallic and non-metallic elements to form advanced semiconductors critically important in cutting-edge technologies.However,due to its low melting point and poor machinability,it is quite difficult to simultaneously characterize gallium’s elastic properties and damping characteristics using conventional methods,which is es-sential in designing and evaluating gallium-based structures.Therefore,developing effective methods to achieve accurate and efficient measurements of Young’s modulus and corresponding internal friction of gallium is of great significance.This letter studies simultaneous measurements of the variations in Young’s modulus and internal friction of gallium at varying temperatures by employing the modified piezoelectric ultrasonic composite oscil-lator technique.Combining the explicit theoretical formulas with the measured resonance and anti-resonance frequencies,it has been discovered that Young’s modulus undergoes an approximately linear decrease as the temperature rises,declining from 83.84 GPa at -70℃ to 79.37 GPa at 20℃.Moreover,like aluminum in the same Group ⅢA of the Periodic Table of Elements and exhibits a grain-boundary internal friction peak,gallium displays a longitudinal internal friction peak at approximately-12°C,with the peak value reaching 1.77×10^(-3).This basic research on gallium’s elastic properties and damping characteristics under low-temperature condi-tions will inspire further explorations of the mechanical properties of a diverse spectrum of low-melting-point functional materials and facilitate applications of gallium-based structures under complex conditions.展开更多
文摘Due to the inability of manufacturing a single monolithic mirror at the 10-meter scales,segmented mirrors have become indispensable tools in modern astronomical research.However,to match the imaging performance of the monolithic counterpart,the sub-mirrors must maintain precise co-phasing.Piston error critically degrades segmented mirror imaging quality,necessitating efficient and precise detection.To ad-dress the limitations that the conventional circular-aperture diffraction with two-wavelength algorithm is sus-ceptible to decentration errors,and the traditional convolutional neural networks(CNNs)struggle to capture global features under large-range piston errors due to their restricted local receptive fields,this paper pro-poses a method that integrates extended Young’s interference principles with a Vision Transformer(ViT)to detect piston error.By suppressing decentration error interference through two symmetrically arranged aper-tures and extending the measurement range to±7.95μm via a two-wavelength(589 nm/600 nm)algorithm.This approach exploits ViT’s self-attention mechanism to model global characteristics of interference fringes.Unlike CNNs constrained by local convolutional kernels,the ViT significantly improves sensitivity to inter-ferogram periodicity.The simulation results demonstrate that the proposed method achieves a measurement accuracy of 5 nm(0.0083λ0)across the range of±7.95μm,while maintaining an accuracy exceeding 95%in the presence of Gaussian noise(SNR≥15 dB),Poisson noise(λ≥9 photons/pixel),and sub-mirror gap er-ror(Egap≤0.2)interference.Moreover,the detection speed shows significant improvement compared to the cross-correlation algorithm.This study establishes an accurate,robust framework for segmented mirror error detection,advancing high-precision astronomical observation.
基金supported by the National Natural Science Foundation of China(Grant Nos.82230057 and 82272859)the National Key R&D Program of China(Grant No.2022YFC2505101).
文摘Introduction,Breast cancer is the most common cancer type in adolescents and young adults<40 years of age,accounting for 30%of cancers in this age group1.Breast cancer in the young presents significant challenges for patients and society,including more aggressive tumor biology,poor prognosis,genetic susceptibility,fertility preservation,and complex psychosocial issues.Moreover,because of the markedly younger median age of breast cancer,the proportion of young breast cancer patients in China is significantly higher than Western countries2.The first Young Breast Cancer in China(YBCC)consensus meeting was held in Guangzhou,China in December 2021 to address exclusive challenges and requirements facing young patients with breast cancer.Chinese medical experts from multiple specialties had an extensive discussion and formulated a consensus over several hot topics in young patients with breast cancer.The“Expert Consensus on the Diagnosis and Treatment of Young Breast Cancer in China(2022 edition)”published in the Chinese Medical Journal has garnered significant attention3,highlighting enormous interest in the YBCC consensus in the medical community and public.
文摘With the transformation from websites to Internet platforms, Chinese young netizens (born in 1990-2005) have become key subjects in the evolution of cyber-nationalism. Based on survey data, this study classifies their nationalism into four types and explores its transformation alongside globalization cognition. The result shows that moderate nationalism is the mainstream. This has raised their attention to globalization, with greater focus on relations between China and developing countries, and nations along the Belt and Road Initiative. Their personal experiences and cultural exposure foster a more inclusive global vision, shaping the evolution of nationalism and global dialogue.
基金funded by the National Key Research and Development Program of China(grant number 2022YFC2305204).
文摘Objective To determine the proportions of drug-resistant tuberculosis(TB),its trends,and the drug resistance-conferring mutations among patients with pulmonary TB aged 10-24 years in China.Methods The data of patients with pulmonary TB were retrieved from a national drug-resistant TB survey for analysis.Joinpoint regression software was used to analyze time trends.We also used whole genome sequencing to analyze the lineages and drug resistance-conferring mutations of 621 isolates.Results Among 4,235 patients with pulmonary TB,the proportion of new cases of multidrug-resistant tuberculosis(MDR-TB)was 3.18%(95%confidence interval[CI]:2.37-4.15)for adolescents and 3.76%(95%CI:3.03-4.60)for young adults;for previously treated patients,MDR-TB accounted for 11.25%(95%CI:5.28-20.28)of adolescents and 11.05%(95%CI:6.88-16.55)of young adults.The proportion of patients with MDR-TB remained stable among both new and previously treated patients aged 10-24 years during the study period.Through whole genome sequencing,we found that the most common mutations in the MDR-TB strains were Ser315Thr in the katG gene(71.74%)and Ser450Leu in the rpoB gene(50.00%).Conclusion This study revealed a high proportion of MDR-TB among adolescents and young adults,indicating that urgent and comprehensive measures are needed to reduce the emergence and transmission of drug-resistant TB among this population in China.
基金supported by the National Natural Science Foundation of China(52303145,52403083)the Natural Science Foundation of Sichuan Province(2025ZNSFSC1400)supported by the start-up funding at Chengdu University(T202207)。
文摘Conductive hydrogel-based stretchable electronics have been extensively investigated,among which strain sensors are the most prominently studied.While the mechanical properties significantly affect the performance of these devices,the systematic correlation between specific mechanical parameters and sensing performance remains rarely explored.This work compares the influences of Young’s modulus and mechanical hysteresis on the sensing performance between highly entangled PAM-Li and double-network PAM-Li-Agar-3 strain sensors.Owing to the brittle agar network,which imparts a higher Young’s modulus and pronounced mechanical hysteresis to the double-network PAMLi-Agar-3 hydrogel,the corresponding sensor requires a greater driving force for deformation and yields signals with poor reproducibility.In comparison,the PAM-Li hydrogel,characterized by highly entangled polymer chains,exhibits a lower Young’s modulus and negligible mechanical hysteresis.Consequently,signals from the PAM-Li strain sensor demonstrate enhanced sensitivity and stability.Therefore,this work demonstrates that a low Young’s modulus and minimal mechanical hysteresis are critical factors for achieving superior sensing performance in strain sensors,as systematically validated through comparative analyses across diverse application scenarios.
文摘The uniquely Chinese educator spirit provides a fundamental guideline for teachers in the new era to fulfill their mission of moral education and talent cultivation.There exists a profound alignment between the teaching innovation practices of young teachers and the core tenets of the educator spirit.Consequently,a three-dimensional framework for systematic guidance can be constructed focusing on values,wisdom,and resilience.Guided by ideals,beliefs,and moral integrity,the foundational values of teaching innovation are solidified,ensuring it remains anchored to the direction of nurturing students.Through educational wisdom and benevolence,the practical rationality of innovation is refined,propelling teaching toward greater scientific rigor and humanistic care.
文摘Welcome to the Special Issue highlighting the latest innovative research conducted by young scientists who have received the 2023 or the 2024 Innovative Young Scientist Awards.Established in 2023 by the University of Science and Technology Beijing,the Innovative Young Scientist Award recognizes exceptional young scientists who have demonstrated sustained engagement in frontier research across mineral science,metallurgy,and materials science,with significant scientific contributions.Committed to fostering the next generation of scientific leaders,the award supports researchers aged under 45.Since its inception,the honor has been bestowed upon 20 recipients,with 10 outstanding researchers selected annually from a competitive pool of approximately 100 applicants.
文摘BACKGROUND Acute myocardial infarction(AMI)is rare among patients aged≤40 years but imposes significant morbidity,psychological distress,and economic burden.App-roximately 10%of AMI hospitalizations involve patients under 45 years,under-scoring the need to study this group.Compared to older patients,young AMI pa-tients exhibit fewer traditional risk factors(e.g.,hypertension,diabetes)but higher rates of smoking,obesity,and non-atherosclerotic causes like spontaneous coro-nary artery dissection or coronary spasm,often linked to substance use.Global trends show rising obesity and dyslipidemia in young populations,with smoking contributing to 62%–90%of AMI cases in this age group.Family history of coro-nary artery disease also elevates risk,particularly in acute coronary syndrome.Studies like Bhardwaj et al report that young AMI patients are predominantly male with single-vessel disease,unlike the multi-vessel disease typical in older cohorts.This study characterizes AMI in young adults(≤40 years)at a single center,focusing on presentation,risk factors,angiographic findings,and manage-ment to guide preventive strategies.AIM To describe the characteristics of AMI in young patients,including presentation,risk factors,coronary angiography(CAG)findings,and management strategies.METHODS This retrospective cross-sectional study analyzed 91 patients aged 20–40 years diagnosed with AMI at Mouwasat Hospital Dammam,from June 2020 to May 2023.Data on clinical presentation,cardiovascular risk factors,CAG findings,and treatments were collected from medical records.Descriptive statistics were used to summarize findings.RESULTS Of 91 patients(96.7%male,mean age 35.9 years±3.4 years),43.9%were obese(body mass index>30 kg/m^(2)).Hyperlipidemia was the most prevalent risk factor(69.2%),followed by smoking(49.5%),diabetes mellitus(33.0%),and hypertension(26.4%).ST-elevation myocardial infarction(STEMI)was the most common presentation(57.1%).The left anterior descending artery was frequently affected(78.0%),with single-vessel disease predominant(72.5%).Most patients underwent percutaneous coronary intervention(PCI)(74.7%),while 8.8%required surgery.CONCLUSION Young AMI patients are predominantly obese males with hyperlipidemia and smoking as key risk factors,pre-senting with STEMI and single-vessel disease amenable to PCI.
文摘The global issue of climate change presents young entrepreneurs with opportunities to explore new business models.FACED with the severe challenges presented by global climate change,pursuing a green lifestyle is a way to achieve sustainable development.Many countries are exploring ways to reach a balance between economic development and environmental protection.
文摘Introduction: Considering a disease of postmenopausal women, there is a noted trend of increasing breast cancer cases among premenopausal women. Our study aimed to determine the main risk factors for breast cancer in women aged 40 and under. Materials and Methods: This was a case-control study with exhaustive sampling of all respondents with histological proof over a 12-month period, matched by age. For all statistical tests, we used a significance threshold of 5%. Additionally provided are the ORs and their 95% confidence intervals, the mean, and standard deviation. Results: We collected 65 cases and 130 controls. The frequency of breast cancer in women aged 40 and under was 35.5%. The mean age was 35.6 ± 4.5 years among cases compared to 32.1 ± 7.9 years among controls. A significantly positive association was detected in both univariate and multivariate analysis between age and breast cancer [(OR) = 10.30;95% CI (1.99 - 53.23)] and [(OR) = 7.53;95% CI (1.82 - 31.23)];family history of breast cancer and breast cancer [(OR) = 9.99;95% CI (1.43 - 69.58)];smoking and breast cancer [OR = 13.11;95% CI (1.05 - 163.30)];sedentary lifestyle and breast cancer [OR = 3.36;95% CI (1.01 - 11.17)];and night work and breast cancer [(OR) = 72.05;95% CI (8.15 - 637.25)]. Conclusion: Earlier systematic screening and regular follow-up should be conducted in young women in our context.
基金supported by the Postgraduate Supervision Fund within the School of Nursing at Fujian Medical University(No.110013)。
文摘Objectives:This study aimed to generate a theoretical framework based on empirical data to explain the behavioral patterns closely related to young and middle-aged patients with lymphoma throughout the disease.Methods:This study followed the classic grounded theory methodology,involving procedures such as theoretical sampling,substantive coding,theoretical coding,constant comparison,and memo writing and sorting.Multiple data types were used based on the principle of“all is data,”including 34 participants providing interview data along with observation notes and 40 relevant secondary texts from the“Lymphoma House”network platform and the“Lymphoma House 086”public account.Two autobiographical books written by lymphoma patients were also selected as data resources.Data collection and analysis were conducted in an iterative process until theoretical saturation was reached.The COREQ checklist was followed to report this study.Results:The main concern of middle-aged and young patients with lymphoma was identifiedas restoring normality,while managing uncertainty was the main behavioral pattern for restoring normality.Uncertainty consists of two interrelated types:inherent uncertainty of illness and perceived uncertainty of patients.Four strategies are used to manage uncertainty:reconstructing certainty,adaptive coping,defensive buffering,and compensatory changing.Managing uncertainty is influenced by disease characteristics and perceptions,social resources,and cultural concepts.The consequence of managing uncertainty is reaching a new normality.Conclusions:Pervasive uncertainty significantly affects the daily lives of young and middle-aged patients with lymphoma.Consequently,strategies for managing disease-related uncertainty to sustain normality are commonly observed in this population.This theoretical framework for addressing uncertainty can serve as a foundation for understanding and developing tailored interventions to manage uncertainty.Future research should focus on managing uncertainty to help patients restore normality.
基金funded by Tianjin Key Medical Discipline(Specialty)Construction Project,China(Grant No.TJYXZDXK-011A)Tianjin Medical University Cancer Institute&Hospital Nursing Special Fund Project(H2304)。
文摘Objectives:This study aimed to classify young breast cancer patients into distinct ambivalence over emotional expression and to explore the factors influencingthe level of ambivalence over emotional expression.Methods:A total of 217 young breast cancer patients were enrolled from a tertiary Grade A oncology hospital in Tianjin,China,using the convenience sampling method.All participants completed the general questionnaire,Ambivalence over Emotion Expression Questionnaire(AEQ),and Family Adapt-Ability and Cohesion Evaluation Scales-Chinese Version(FACES-CV).We employed exploratory latent profileanalysis for ambivalence over emotional expression profilingand logistic regression analysis to identify the influentialfactors Results:The results of the latent profileanalysis supported the models of four latent profiles,which were definedas“low conflict-lowexpression reflection”(19.2%),“high conflict-high inhibition expression”(43.9%),“moderate conflict-highregret expression”(18.1%),and“moderate conflict-desire understand”(18.8%).Logistic regression revealed that family cohesion,marital status,residence,per capita monthly income,and cancer stage were the influencingfactors of ambivalence over emotional expression in young breast cancer patients(P<0.05)Conclusions:Levels of ambivalence over emotional expression ameast cancer patients with breast cancer were highly heterogeneous.Medical staff should provide psychological counseling and health education tailored to the unique characteristics of emotional expression ambivalence in different patient groups to promote healthy emotional expression among patients.
文摘Objective:This randomized controlled trial aimed to assess the impact of a targeted educational intervention on the awareness and practice of genetic screening and counseling among young adults in Calabar Municipality,Cross River State.Materials and Methods:Participants(aged 18-45)were randomly assigned to either an intervention group receiving structured health education or a control group receiving general health information.Stratified randomization was used between the groups.A sample size of 340 participants was recruited to detect a 20%difference in outcomes with 80%power.Data were collected using prevalidated questionnaires at baseline,immediately after the intervention,and at a 3-month follow-up.The intervention consisted of three weekly 90-min educational sessions covering genetics,the benefits of screening,and practical guidance on accessing genetic services.The primary outcomes were changes in awareness and practices related to genetic screening,with secondary outcomes focusing on attitudes and intentions toward genetic counseling.Results:Findings revealed that awareness of genetic screening was higher in the intervention group,with 65.9%of participants aware of early detection,compared to 59.4%in the control group,although the difference was not statistically significant(P=0.23).In terms of practice,42.9%of the intervention group and 40.0%of the control group engaged in genetic screening programs,with no significant difference(P=0.57).Logistic regression analysis highlighted that age,educational level,and knowledge of teratogens were significant predictors of genetic screening awareness.Participants aged 36 years and above were 1.52 times more likely to be aware(odds ratio[OR]=1.52,P=0.003),and those with tertiary education had nearly double the likelihood of awareness(OR=1.96,P<0.001).Conclusion:The study underscores the importance of targeted education in improving genetic screening awareness.
文摘The association between sugar-sweetened beverages(SSBs)intake and hair loss condition might give scientific support for better dietary practices to prevent hair loss.We aimed to explore the association of SSBs intake with the hair loss condition in women.This online cross-sectional study,conducted from January 2022 to April 2022,recruited 1169 women aged 18-45 years from 31 provinces on mainland of China.We u sed the updated version of the 15-item Beverage Intake Questionnaire(BEVQ-15)to evaluate the usual beverage consumption over the past month and the Hair-Shedding Visual Scale for Asian Women(HSVS-A)to evaluate the extent of hair shedding.We utilized binary logistic regression to assess the association between SSBs intake and hair loss.Among 1169 female participants with an average age of 27.2,there were 211(18.0%)participants with hair loss.Compared with participants who never drank SSBs,those who drank m ore than 7 times/week or 1000 mL/week were more likely to have hair loss,with an adjusted odds ratio(OR)of 2.25(95%confidence interval(CI)=1.32,3.83)or 2.22(95%CI=1.28,3.85).Furthermore,the m ediation effect of anxiety status on the association between SSBs and female hair loss was observed,with a significant indirect effect(β_(indirect)=0.0199,95%CI=0.0032,0.0418).In conclusion,our study showed that w omen who consumed higher amounts of SSBs had an increased risk of hair loss,which might attract more attention from young women and benefit from reducing SSBs consumption.Further longitudinal and interventional studies are still needed to confirm the current association and provide evidenced-based health education.
文摘Against the backdrop of the Healthy China strategy,the insurance behavior of young consumers presents new characteristics such as enhanced autonomy,a shift toward proactive risk management,stronger personalized demands,and higher expectations for online experiences.In response to changes in young consumers'risk awareness and consumption philosophy,this paper analyzes influencing factors from four dimensions:economic income,risk perception,social environment,and internet penetration.It proposes that insurance companies should focus on digital innovation,precise product development,social platform marketing,and popularization of insurance education,to promote the transformation of young people’s insurance demand from passive risk transfer to proactive long-term planning,and to help the insurance industry and young groups achieve win-win development.
基金financially supported by the National Key R&D Program of China(Grant No.2023YFF0716800)the National Natural Science Foundation of China(Grant No.12074160)the Natural Science Foundation of Liaoning Province of China(Grant No.2024-MS-181).
文摘As an emerging multifunctional metal with the lowest melting point except for mercury,gallium combines a wide range of metallic and non-metallic elements to form advanced semiconductors critically important in cutting-edge technologies.However,due to its low melting point and poor machinability,it is quite difficult to simultaneously characterize gallium’s elastic properties and damping characteristics using conventional methods,which is es-sential in designing and evaluating gallium-based structures.Therefore,developing effective methods to achieve accurate and efficient measurements of Young’s modulus and corresponding internal friction of gallium is of great significance.This letter studies simultaneous measurements of the variations in Young’s modulus and internal friction of gallium at varying temperatures by employing the modified piezoelectric ultrasonic composite oscil-lator technique.Combining the explicit theoretical formulas with the measured resonance and anti-resonance frequencies,it has been discovered that Young’s modulus undergoes an approximately linear decrease as the temperature rises,declining from 83.84 GPa at -70℃ to 79.37 GPa at 20℃.Moreover,like aluminum in the same Group ⅢA of the Periodic Table of Elements and exhibits a grain-boundary internal friction peak,gallium displays a longitudinal internal friction peak at approximately-12°C,with the peak value reaching 1.77×10^(-3).This basic research on gallium’s elastic properties and damping characteristics under low-temperature condi-tions will inspire further explorations of the mechanical properties of a diverse spectrum of low-melting-point functional materials and facilitate applications of gallium-based structures under complex conditions.
