Objective: to study the clinical value of nutrition standardized nursing model for head and neck radiotherapy patients. Methods: 84 cases of head and neck radiotherapy in our hospital from August 2019 to August 2020 w...Objective: to study the clinical value of nutrition standardized nursing model for head and neck radiotherapy patients. Methods: 84 cases of head and neck radiotherapy in our hospital from August 2019 to August 2020 were selected and randomly divided into control group (routine nursing) and observation group (standardized nutritional nursing). The nutritional index and nursing satisfaction were analyzed. Results: after nursing, the nutritional index of the observation group was better than that of the control group, with significant difference (P < 0.05). Compared with the control group, the nursing satisfaction of the observation group was significantly different (P < 0.05). Conclusion: through the implementation of nutrition standardized nursing measures for patients with head and neck radiotherapy, good clinical application effect can be obtained, the nutritional status of patients can be improved, and the nursing satisfaction degree can be improved, which is worthy of clinical application.展开更多
Background:Portal vein tumor thrombosis(PVTT)is regarded as a contraindication for liver transplantation(LT)in hepatocellular carcinoma(HCC).However,some of these patients may have a favorable prognosis after LT.In th...Background:Portal vein tumor thrombosis(PVTT)is regarded as a contraindication for liver transplantation(LT)in hepatocellular carcinoma(HCC).However,some of these patients may have a favorable prognosis after LT.In this study,we evaluated the biological behavior of HCC with PVTT using tumor biomarker(alpha-fetoprotein,AFP)and 18 F-FDG positron emission tomography(tumor standard uptake value)to identify a subset of patients who may be suitable for LT.Methods:Seventy-five HCC-PVTT liver recipients transplanted during February 2016 and June 2018 were analyzed.Different pre-transplant prognostic factors were identified by univariate and multivariate analyses.PVTT status was identified following Vp classification(Vp1-Vp4).Results:Three-year recurrence-free survival and overall survival rates were 40%and 65.4%in Vp2-Vp3 PVTT patients,21.4%and 30.6%in Vp4 PVTT patients(P<0.05).Total tumor diameter>8 cm,pretransplant AFP level>1000 ng/m L and intrahepatic tumor maximal standard uptake value(SUVmaxtumor>5)were independent risk factors for HCC recurrence and overall survival after LT in Vp2-3 PVTT patients.Low risk patients were defined as total tumor diameter≤8 cm;or if total tumor diameter more than 8 cm,with both pre-transplant AFP level less than 1000 ng/m L and intrahepatic tumor SUVmax less than 5,simultaneously.Twenty-two Vp2-3 PVTT HCC patients(46.8%)were identified as low risk patients,and their 3-year recurrence-free and overall survival rates were 67.6%and 95.2%,respectively.Conclusions:Patients with segmental or lobar PVTT and biologically favorable tumors defined by AFP and 18 F-FDG SUVmax might be suitable for LT.展开更多
Introduction: In the setting of an extra-adrenal malignancy, it is a recognized clinical challenge to try and distinguish a benign adrenal mass from a metastatic deposit. Current non-invasive diagnostic tools for adre...Introduction: In the setting of an extra-adrenal malignancy, it is a recognized clinical challenge to try and distinguish a benign adrenal mass from a metastatic deposit. Current non-invasive diagnostic tools for adrenal gland evaluation include CT, MRI, PET and PET-CT. Diagnostic interpretative error can occur as evaluations rarely have complete cytologic or histologic correlation for concordance purposes. Aims: To establish the performance characteristics of non-contrast CT attenuation values (Hounsfield units-HU) and the optimal PET-CT maximum standard uptake value (SUVmax) for predicting adrenal malignancy when correlated with adrenal gland endoscopic ultrasound fine needle aspiration (EUS FNA) cytology results. Methods: A prospectively maintained EUS database was reviewed to identify consecutive patients who underwent a left adrenal gland FNA. Non-contrast CT attenuation values and SUVmax scores were calculated. EUS FNA cytology results were used as the reference standard for determining the presence of benign versus malignant adrenal gland status. Results: Sixty-two patients (69 ± 11 years) underwent adrenal EUS FNA, 34 (54.8%) of whom had a clinically suspected or established extra-adrenal malignancy. Non-invasive imaging was suggestive of abnormal adrenal morphology or altered PET-CT FDG activity in 45 (72.6%) patients. Elevated attenuation values (≥10 HU) by non-enhanced CT had a sensitivity and specificity of 100% and 34.6%, respectively. The SUVmax for malignant altered morphology was significantly higher than that for benign lesions [(8.5 ± 3.1 vs 3.3 ± 0.7;(p = 0.0001)]. ROC curve analysis indicated that an optimum cutoff SUVmax of ≥4.1 (AUC 0.92) yielded the best power distinction for malignancy with a sensitivity and specificity of 89% and 100%. Conclusion: When evaluating altered adrenal morphology by non-invasive methods, the performance characteristics of elevated CT attenuation values are suboptimal. But by adopting a SUVmax cut-off value of ≥4.1 could potentially improve such characteristics to detect malignancy.展开更多
In this paper we study inviscid and viscid Burgers equations with initial conditions in the half plane . First we consider the Burgers equations with initial conditions admitting two and three shocks and use the HOPF-...In this paper we study inviscid and viscid Burgers equations with initial conditions in the half plane . First we consider the Burgers equations with initial conditions admitting two and three shocks and use the HOPF-COLE transformation to linearize the problems and explicitly solve them. Next we study the Burgers equation and solve the initial value problem for it. We study the asymptotic behavior of solutions and we show that the exact solution of boundary value problem for viscid Burgers equation as viscosity parameter is sufficiently small approach the shock type solution of boundary value problem for inviscid Burgers equation. We discuss both confluence and interacting shocks. In this article a new approach has been developed to find the exact solutions. The results are formulated in classical mathematics and proved with infinitesimal technique of non standard analysis.展开更多
Chinese and international studies on agricultural ecological compensation standards fall into two categories:While some focus on the cost of ecological protection,others proceed from the value of ecological services.C...Chinese and international studies on agricultural ecological compensation standards fall into two categories:While some focus on the cost of ecological protection,others proceed from the value of ecological services.Cost and value are two aspects of an integrated input-output system,but most existing studies on both types of compensation standards are independent of each other.Drawing upon the reasonable elements from both types of studies to overcome each other’s one-sidedness,this paper has created a“model of consistent compensation standards for the ecosystem and ecological value,”integrating the research approaches for both types of compensation standards under the same analytical framework.Through the application and analysis of this model,this paper has verified the model’s theoretical and practical significance in correcting the one-sidedness of each type of research.The principles and methodologies for creating the model may be further extended to research on agricultural ecological compensation standards under different conditions.In some circumstances,the ability of relatively redundant resources to create ecological value is overlooked.To address this problem,this paper employs a linear programming(LP)sensitivity analysis instrument to correct the model’s initial optimal solutions and arrive at consistent compensation standards that satisfy the consistency between ecosystem and ecological value,thus perfecting the theoretical and methodological system created by this paper for research on agricultural ecological compensation standards.展开更多
The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is th...The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is the major reason for low-locked in the global value chain based on the analysis of knowledge flow,where standard is one of the most cmmonly used knowledge barriers.In this regard,a standard strategy based on similar technology development can be adopted to step over knowledge barriers and achieve upgrading.展开更多
This paper conducts analysis on the educational evaluation standard value based on the normative perspective. Systematic evaluation refers to the determination of the nature and state of a system by means of an effect...This paper conducts analysis on the educational evaluation standard value based on the normative perspective. Systematic evaluation refers to the determination of the nature and state of a system by means of an effective standard, based on the clear system objective, structure, and system properties, and then compares it with a set of evaluation criteria and makes a judgment. The evaluation result is also the interaction of the product. The education evaluation which is constructed with the dialogue thinking is democratic, friendly, open, win-win, and the evaluation of creation. Educational evaluation is not a party to the other party as superior, judgment, conclusion, one-way row order, but both sides of the equality. Under this basis, this paper proposes the educational evaluation standard value based on the normative perspective. In the future, we will apply proposed method into the general applications to verify the effectiveness and systematic effectiveness.展开更多
We deduced the asymmetrical values from theory on Z’s decay.These valuesdepend only on the mass of Z’ and are very large.The measurement of these large val-ues can be easy.
This study examines blockchain technologies and their pivotal role in the evolving Metaverse,shedding light on topics such as how to invest in cryptocurrency,the mechanics behind crypto mining,and strategies to effect...This study examines blockchain technologies and their pivotal role in the evolving Metaverse,shedding light on topics such as how to invest in cryptocurrency,the mechanics behind crypto mining,and strategies to effectively buy and trade cryptocurrencies.While it contextualises the common queries of"why is crypto crashing?"and"why is crypto down?",the research transcends beyond the frequent market fluctuations to unravel how cryptocurrencies fundamentally work and the step-by-step process on how to create a cryptocurrency.Contrasting existing literature,this comprehensive investigation encompasses both the economic and cybersecurity risks inherent in the blockchain and fintech spheres.Through an interdisciplinary approach,the research transitions from the fundamental principles of fintech investment strategies to the overarching implications of blockchain within the Metaverse.Alongside exploring machine learning potentials in financial sectors and risk assessment methodologies,the study critically assesses whether developed or developing nations are poised to reap greater benefits from these technologies.Moreover,it probes into both enduring and dubious crypto projects,drawing a distinct line between genuine blockchain applications and Ponzi-like schemes.The conclusion resolutely affirms the staying power of blockchain technologies,underlined by a profound exploration of their intrinsic value and a reflective commentary by the author on the potential risks confronting individual investors.展开更多
Anti-floating design of building engineering is a very important link in many engineering design links.In recent years, some cases of basement anti floating engineering failure have been exposed in the media, and the ...Anti-floating design of building engineering is a very important link in many engineering design links.In recent years, some cases of basement anti floating engineering failure have been exposed in the media, and the scene is often shocking, which also rings the alarm bell for the majority of designers. The technical standard for anti floating of Building Engineering (jgj476-2019) issued and implemented by the Ministry of housing and urban rural development on March 1, 2020 is timely and effective, which provides a powerful and reliable technical implementation standard for anti floating design, construction, monitoring and detection.The author studies and uses this standard, compares other standards and combines with the engineering practice, and finds that when the group piles in the anti floating standard are damaged as a whole, it is necessary to further discuss the calculation formula in the corresponding clauses of the standard value of the ultimate bearing capacity of a single anti floating pile.In order to ensure the safety of the design, at the same time, make the theoretical concept clear and clear, but also take into account the principle of economy, this paper discusses this problem as follows.展开更多
Objective: to study the effect of improved standard collection method in sputum bacterial test. Methods: 82 patients with acute attack of bronchitis received in our hospital from October 2018 to October 2019 were sele...Objective: to study the effect of improved standard collection method in sputum bacterial test. Methods: 82 patients with acute attack of bronchitis received in our hospital from October 2018 to October 2019 were selected for sputum bacterial test.Based on the order of admission, 41 cases in the reference group were given routine expectoration collection method;41 cases in the observation group were treated with improved standard collection method, and the test results of the two groups were compared. Results: ① The qualified rate of sputum samples in the observation group was statistically different from that in the reference group (P < 0.05).② The positive rate of sputum culture in the observation group was significantly different from that in the reference group (P < 0.05).③ There were differences in the collection time of samples and the operation time of sputum bacteriological test between the two groups (P < 0.05).Conclusion: the application of improved standard collection method in sputum bacterial test can improve the positive rate and shorten the time of practical operation.展开更多
对2020年OEKO-TEX■协会发布最新版标准STANDARD 100 by OEKO-TEX■的变化进行详细解读。主要包括重新定义亚硝基化合物、砷与汞总量及变更邻苯二甲酸酯总量限量、新增限制物质和受监测物质等,重点列出了新增受监测芳胺类化学品可以合...对2020年OEKO-TEX■协会发布最新版标准STANDARD 100 by OEKO-TEX■的变化进行详细解读。主要包括重新定义亚硝基化合物、砷与汞总量及变更邻苯二甲酸酯总量限量、新增限制物质和受监测物质等,重点列出了新增受监测芳胺类化学品可以合成的染料,以及标准中涉及的致癌、致敏、禁用染料及新增受监测染料。展开更多
文摘Objective: to study the clinical value of nutrition standardized nursing model for head and neck radiotherapy patients. Methods: 84 cases of head and neck radiotherapy in our hospital from August 2019 to August 2020 were selected and randomly divided into control group (routine nursing) and observation group (standardized nutritional nursing). The nutritional index and nursing satisfaction were analyzed. Results: after nursing, the nutritional index of the observation group was better than that of the control group, with significant difference (P < 0.05). Compared with the control group, the nursing satisfaction of the observation group was significantly different (P < 0.05). Conclusion: through the implementation of nutrition standardized nursing measures for patients with head and neck radiotherapy, good clinical application effect can be obtained, the nutritional status of patients can be improved, and the nursing satisfaction degree can be improved, which is worthy of clinical application.
基金supported by grants from the National S&T Major Project(2017ZX10203205)Medical Science and Technology Project of Zhejiang Province(2014KYA082)+1 种基金Fundamental Research Funds for the Central Universities(2018FZA7002)Shulan Talent Foundation。
文摘Background:Portal vein tumor thrombosis(PVTT)is regarded as a contraindication for liver transplantation(LT)in hepatocellular carcinoma(HCC).However,some of these patients may have a favorable prognosis after LT.In this study,we evaluated the biological behavior of HCC with PVTT using tumor biomarker(alpha-fetoprotein,AFP)and 18 F-FDG positron emission tomography(tumor standard uptake value)to identify a subset of patients who may be suitable for LT.Methods:Seventy-five HCC-PVTT liver recipients transplanted during February 2016 and June 2018 were analyzed.Different pre-transplant prognostic factors were identified by univariate and multivariate analyses.PVTT status was identified following Vp classification(Vp1-Vp4).Results:Three-year recurrence-free survival and overall survival rates were 40%and 65.4%in Vp2-Vp3 PVTT patients,21.4%and 30.6%in Vp4 PVTT patients(P<0.05).Total tumor diameter>8 cm,pretransplant AFP level>1000 ng/m L and intrahepatic tumor maximal standard uptake value(SUVmaxtumor>5)were independent risk factors for HCC recurrence and overall survival after LT in Vp2-3 PVTT patients.Low risk patients were defined as total tumor diameter≤8 cm;or if total tumor diameter more than 8 cm,with both pre-transplant AFP level less than 1000 ng/m L and intrahepatic tumor SUVmax less than 5,simultaneously.Twenty-two Vp2-3 PVTT HCC patients(46.8%)were identified as low risk patients,and their 3-year recurrence-free and overall survival rates were 67.6%and 95.2%,respectively.Conclusions:Patients with segmental or lobar PVTT and biologically favorable tumors defined by AFP and 18 F-FDG SUVmax might be suitable for LT.
文摘Introduction: In the setting of an extra-adrenal malignancy, it is a recognized clinical challenge to try and distinguish a benign adrenal mass from a metastatic deposit. Current non-invasive diagnostic tools for adrenal gland evaluation include CT, MRI, PET and PET-CT. Diagnostic interpretative error can occur as evaluations rarely have complete cytologic or histologic correlation for concordance purposes. Aims: To establish the performance characteristics of non-contrast CT attenuation values (Hounsfield units-HU) and the optimal PET-CT maximum standard uptake value (SUVmax) for predicting adrenal malignancy when correlated with adrenal gland endoscopic ultrasound fine needle aspiration (EUS FNA) cytology results. Methods: A prospectively maintained EUS database was reviewed to identify consecutive patients who underwent a left adrenal gland FNA. Non-contrast CT attenuation values and SUVmax scores were calculated. EUS FNA cytology results were used as the reference standard for determining the presence of benign versus malignant adrenal gland status. Results: Sixty-two patients (69 ± 11 years) underwent adrenal EUS FNA, 34 (54.8%) of whom had a clinically suspected or established extra-adrenal malignancy. Non-invasive imaging was suggestive of abnormal adrenal morphology or altered PET-CT FDG activity in 45 (72.6%) patients. Elevated attenuation values (≥10 HU) by non-enhanced CT had a sensitivity and specificity of 100% and 34.6%, respectively. The SUVmax for malignant altered morphology was significantly higher than that for benign lesions [(8.5 ± 3.1 vs 3.3 ± 0.7;(p = 0.0001)]. ROC curve analysis indicated that an optimum cutoff SUVmax of ≥4.1 (AUC 0.92) yielded the best power distinction for malignancy with a sensitivity and specificity of 89% and 100%. Conclusion: When evaluating altered adrenal morphology by non-invasive methods, the performance characteristics of elevated CT attenuation values are suboptimal. But by adopting a SUVmax cut-off value of ≥4.1 could potentially improve such characteristics to detect malignancy.
文摘In this paper we study inviscid and viscid Burgers equations with initial conditions in the half plane . First we consider the Burgers equations with initial conditions admitting two and three shocks and use the HOPF-COLE transformation to linearize the problems and explicitly solve them. Next we study the Burgers equation and solve the initial value problem for it. We study the asymptotic behavior of solutions and we show that the exact solution of boundary value problem for viscid Burgers equation as viscosity parameter is sufficiently small approach the shock type solution of boundary value problem for inviscid Burgers equation. We discuss both confluence and interacting shocks. In this article a new approach has been developed to find the exact solutions. The results are formulated in classical mathematics and proved with infinitesimal technique of non standard analysis.
基金by the Humanities and Social Science Fund Project of the Ministry of Education“Study on the Basis of Standards for the Ecological Compensation of the Ecological Functions of Agricultural Resources(Grant No.14YJA790092)”.
文摘Chinese and international studies on agricultural ecological compensation standards fall into two categories:While some focus on the cost of ecological protection,others proceed from the value of ecological services.Cost and value are two aspects of an integrated input-output system,but most existing studies on both types of compensation standards are independent of each other.Drawing upon the reasonable elements from both types of studies to overcome each other’s one-sidedness,this paper has created a“model of consistent compensation standards for the ecosystem and ecological value,”integrating the research approaches for both types of compensation standards under the same analytical framework.Through the application and analysis of this model,this paper has verified the model’s theoretical and practical significance in correcting the one-sidedness of each type of research.The principles and methodologies for creating the model may be further extended to research on agricultural ecological compensation standards under different conditions.In some circumstances,the ability of relatively redundant resources to create ecological value is overlooked.To address this problem,this paper employs a linear programming(LP)sensitivity analysis instrument to correct the model’s initial optimal solutions and arrive at consistent compensation standards that satisfy the consistency between ecosystem and ecological value,thus perfecting the theoretical and methodological system created by this paper for research on agricultural ecological compensation standards.
文摘The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is the major reason for low-locked in the global value chain based on the analysis of knowledge flow,where standard is one of the most cmmonly used knowledge barriers.In this regard,a standard strategy based on similar technology development can be adopted to step over knowledge barriers and achieve upgrading.
文摘This paper conducts analysis on the educational evaluation standard value based on the normative perspective. Systematic evaluation refers to the determination of the nature and state of a system by means of an effective standard, based on the clear system objective, structure, and system properties, and then compares it with a set of evaluation criteria and makes a judgment. The evaluation result is also the interaction of the product. The education evaluation which is constructed with the dialogue thinking is democratic, friendly, open, win-win, and the evaluation of creation. Educational evaluation is not a party to the other party as superior, judgment, conclusion, one-way row order, but both sides of the equality. Under this basis, this paper proposes the educational evaluation standard value based on the normative perspective. In the future, we will apply proposed method into the general applications to verify the effectiveness and systematic effectiveness.
基金The project partially supported by the Grant LWTZ-1298 of the Chinese Academy of Sciencesthe National Natural Science Foundation of China under contract No.19475049
文摘We deduced the asymmetrical values from theory on Z’s decay.These valuesdepend only on the mass of Z’ and are very large.The measurement of these large val-ues can be easy.
基金supported by the PETRAS National Centre of Excellence for IoT Systems Cybersecurity,which has been funded by the UK EPSRC[under grant number EP/S035362/1]the Software Sustainability Institute[grant number:EP/S021779/1]by the Cisco Research Centre[grant number CG1525381].
文摘This study examines blockchain technologies and their pivotal role in the evolving Metaverse,shedding light on topics such as how to invest in cryptocurrency,the mechanics behind crypto mining,and strategies to effectively buy and trade cryptocurrencies.While it contextualises the common queries of"why is crypto crashing?"and"why is crypto down?",the research transcends beyond the frequent market fluctuations to unravel how cryptocurrencies fundamentally work and the step-by-step process on how to create a cryptocurrency.Contrasting existing literature,this comprehensive investigation encompasses both the economic and cybersecurity risks inherent in the blockchain and fintech spheres.Through an interdisciplinary approach,the research transitions from the fundamental principles of fintech investment strategies to the overarching implications of blockchain within the Metaverse.Alongside exploring machine learning potentials in financial sectors and risk assessment methodologies,the study critically assesses whether developed or developing nations are poised to reap greater benefits from these technologies.Moreover,it probes into both enduring and dubious crypto projects,drawing a distinct line between genuine blockchain applications and Ponzi-like schemes.The conclusion resolutely affirms the staying power of blockchain technologies,underlined by a profound exploration of their intrinsic value and a reflective commentary by the author on the potential risks confronting individual investors.
文摘Anti-floating design of building engineering is a very important link in many engineering design links.In recent years, some cases of basement anti floating engineering failure have been exposed in the media, and the scene is often shocking, which also rings the alarm bell for the majority of designers. The technical standard for anti floating of Building Engineering (jgj476-2019) issued and implemented by the Ministry of housing and urban rural development on March 1, 2020 is timely and effective, which provides a powerful and reliable technical implementation standard for anti floating design, construction, monitoring and detection.The author studies and uses this standard, compares other standards and combines with the engineering practice, and finds that when the group piles in the anti floating standard are damaged as a whole, it is necessary to further discuss the calculation formula in the corresponding clauses of the standard value of the ultimate bearing capacity of a single anti floating pile.In order to ensure the safety of the design, at the same time, make the theoretical concept clear and clear, but also take into account the principle of economy, this paper discusses this problem as follows.
文摘Objective: to study the effect of improved standard collection method in sputum bacterial test. Methods: 82 patients with acute attack of bronchitis received in our hospital from October 2018 to October 2019 were selected for sputum bacterial test.Based on the order of admission, 41 cases in the reference group were given routine expectoration collection method;41 cases in the observation group were treated with improved standard collection method, and the test results of the two groups were compared. Results: ① The qualified rate of sputum samples in the observation group was statistically different from that in the reference group (P < 0.05).② The positive rate of sputum culture in the observation group was significantly different from that in the reference group (P < 0.05).③ There were differences in the collection time of samples and the operation time of sputum bacteriological test between the two groups (P < 0.05).Conclusion: the application of improved standard collection method in sputum bacterial test can improve the positive rate and shorten the time of practical operation.
文摘对2020年OEKO-TEX■协会发布最新版标准STANDARD 100 by OEKO-TEX■的变化进行详细解读。主要包括重新定义亚硝基化合物、砷与汞总量及变更邻苯二甲酸酯总量限量、新增限制物质和受监测物质等,重点列出了新增受监测芳胺类化学品可以合成的染料,以及标准中涉及的致癌、致敏、禁用染料及新增受监测染料。
