This paper looks into David Herbert Lawrence＇s characterization of Mrs. Morel in his famous novel Sons and Lovers （1962）. Mrs. Morel has long been regarded by feminist critics as the destroyed, a victim destroyed b...This paper looks into David Herbert Lawrence＇s characterization of Mrs. Morel in his famous novel Sons and Lovers （1962）. Mrs. Morel has long been regarded by feminist critics as the destroyed, a victim destroyed by the male-dominated society, and her son Paul has been viewed as a destroyer of women. Based on a close reading of the novel, this paper examines Lawrence＇s characterization of Mrs. Morel and reveals that Mrs Morel actually belongs to the destroyer instead of the destroyed through an analysis of her relationship with the three male characters in the novel, thus providing new insights into the understanding of this classic novel.展开更多
An unusual bird is destroying crops and angering farmers in north-eastern Italy:the flamingo.Flamingos are relatively recent arrivals in the area,and have settled into the flooded fields that produce rice in Ferrara P...An unusual bird is destroying crops and angering farmers in north-eastern Italy:the flamingo.Flamingos are relatively recent arrivals in the area,and have settled into the flooded fields that produce rice in Ferrara Province,between Venice and Ravenna.The birds aren't targeting the rice seedlings but use their feet to stir up(搅动)the soil and grab molluscs,algae or insects from the shallow water.These grains of rice are items that have suffered damage.展开更多
Highlights The RT-RAA-VF assay developed for the NiV P gene can perform rapid detection of NiV within 20 min at 42℃ with high specificity.This assay is capable of attaining sensitivity to a single copy of NiV RNA tra...Highlights The RT-RAA-VF assay developed for the NiV P gene can perform rapid detection of NiV within 20 min at 42℃ with high specificity.This assay is capable of attaining sensitivity to a single copy of NiV RNA transcripts.This assay effectively avoids false positives caused by aerosol contamination with a sealed disposable nucleic acid visualization test paper device.展开更多
In order to overcome the heavy casualties caused by gas explosion,we verified the propagation law of shock wave in pipeline and the overpressure distribution of gas explosion by similar experiments according to the an...In order to overcome the heavy casualties caused by gas explosion,we verified the propagation law of shock wave in pipeline and the overpressure distribution of gas explosion by similar experiments according to the analyses of reasons for casualty and ventilation system model destroyed by gas explosion in the mining face.We summarized the gas composition after the explosion and its danger,analyzed the effects of the gas explosion shock wave to ventilation system and facilities and the laws of toxic gas spread and diffusion in the ventilation network after the explosion.We presented a technical proposal to control the smoke and recover the ventilation system after a gas explosion and developed a reserve air door and control system that were embed in the lane,and could close automatically in conditions of no pressure and electricity.The results showed that the reserve air door normally opened and could close automatically controlling the smoke flow and resuming the ventilation system when the gas explosion shock wave destroyed the original shutting air door which resulted in the air short circuit.展开更多
As an effective therapeutic modality, high-intensity focused ultrasound（HIFU） can destroy tumour tissues by thermocoagulation with less metastasis, but it is still limited by inaccurate non-invasive temperature moni...As an effective therapeutic modality, high-intensity focused ultrasound（HIFU） can destroy tumour tissues by thermocoagulation with less metastasis, but it is still limited by inaccurate non-invasive temperature monitoring and efficacy evaluation. A model of electrical impedance measurement during HIFU therapy was established using the temperatureimpedance relationship. Based on the simulations of acoustic pressure, temperature, and electrical conductivity, the impedance of the phantom was calculated and experimentally demonstrated for different values of acoustic power values and treatment time. We proved that the relative impedance variation（RIV） increases linearly with the increasing treatment time at a fixed acoustic power, and the relative impedance variation rate shows a linear relationship with the acoustic power.The RIV and treatment time required for HIFU treatment efficacy are inversely proportional to the acoustic power and the square of acoustic power, respectively. The favourable results suggest that RIV can be used as an efficient indicator for noninvasive temperature monitoring and efficacy evaluation and may provide new strategy for accurate dose control of HIFU therapy.展开更多
By throwing a particle with electric charge and angular momentum into the black holes, much evidence shows that the naked singularity of some （3＋1）-dimensional black holes might be seen, which is not allowed in the...By throwing a particle with electric charge and angular momentum into the black holes, much evidence shows that the naked singularity of some （3＋1）-dimensional black holes might be seen, which is not allowed in the weak cosmic censorship conjecture. In this study, we consider a （2＋1）-dimensional Peldan black hole and find that it could be destroyed under certain conditions in both extreme and near-extreme cases.展开更多
Neglecting the self-force, self-energy and radiative effects, we follow the spirit of Wald＇s gedanken experiment and further discuss whether an extremal Kerr-Newman-AdS （KNA） black hole can turn into a naked singul...Neglecting the self-force, self-energy and radiative effects, we follow the spirit of Wald＇s gedanken experiment and further discuss whether an extremal Kerr-Newman-AdS （KNA） black hole can turn into a naked singularity when it captures charged and spinning massive particles. It is found that feeding a test particle into an extremal KNA black hole could lead to a violation of cosmic censorship for the black hole.展开更多
The corrosion of ECR glass fiber was investigated by the analysis methods of weight loss ratio under different acids and at various durations.Weight loss,leaching of cations,and surface composition of ECR glass fiber ...The corrosion of ECR glass fiber was investigated by the analysis methods of weight loss ratio under different acids and at various durations.Weight loss,leaching of cations,and surface composition of ECR glass fiber were analyzed.The corrosion mechanism of ECR glass fiber in acid environment was also discussed.The experimental results showed that the corrosion degree of ECR glass fiber in different acids obeyed the order： HNO3〉H2SO4〉HCl.The acid effects on corrosion of ECR glass fiberis were totally different.Hydrochloric acid mainly destroyed the network structure of [AlO4],while sulfuric acid and nitric acid mainly destroyed the structure of [SiO4].The acid resistance of ECR glass fiber is much better than that of E glass fiber due to the generation of intermediate product silicic acid gel Si（OH）4 during ion exchange.It can adhere to the glass surface to form a thin film and hinder the proceeding of corrosion.展开更多
For clinical trial of Medicinal synthetic Aluminum-magnesium silicate (MSAMS, Antivirt<sup>®</sup>), on viral loads and CD4-lymphocytes counts of HIV/AIDS patients, 10 volunteers were treated. Thei...For clinical trial of Medicinal synthetic Aluminum-magnesium silicate (MSAMS, Antivirt<sup>®</sup>), on viral loads and CD4-lymphocytes counts of HIV/AIDS patients, 10 volunteers were treated. Their blood samples were tested for viral loads and for CD4-lymphocytes counts, before the treatment and every 4 weeks during the medication. The regimen was: MSAMS (50 mg/kg), MSAMS-stabilized Ampicillin trihydrate (7.5 mg/kg) and immunace extra protection<sup>®</sup> (1 tablet/day), for 4 weeks. Then, it was reduced to 50 mg/kg (MSAMS) and the immune stimulant. When their viral loads become undetectable, they would be treated for additional 4 weeks. Initially, the Antivirt<sup>®</sup>-regimen appeared to worsen both HIV infection-load and immune deficiency but later relieved them. Patients’ mean-viral load increased (P = 0.020), from 1820.30 ± 868.75 to 2855.90 ± 960.98, after 4 weeks before reducing (P = 0.030) to 1565.20 ± 743.17, after 8 weeks. Similarly, their mean-CD4-lymphocytes count reduced (P = 0.008) from 496.80 ± 194.39 to 263.90 ± 149.26, after 4 weeks before improving (P = 0.001) to 507.90 ± 133.19, after 8 weeks.展开更多
Hammerhead ribozymes are small RNA moleculesthat bind to a complementary sequence of RNA andcleave that sequence at a conserved triplet NUX (N =G, A, X = A, U, C). ln comparison with ilntisensemolecuIes, ribozymes not...Hammerhead ribozymes are small RNA moleculesthat bind to a complementary sequence of RNA andcleave that sequence at a conserved triplet NUX (N =G, A, X = A, U, C). ln comparison with ilntisensemolecuIes, ribozymes not only bind to target RNA butalso cleave the target at predicted sites. They havebeen used as molecular agents to destroy either viralRNA or oncogene transcripts in human cancers. Manyhuman cervical and oral carcinomas express RNA展开更多
Environmental crisis: serious greenhouse effect, destroyed ozonosphere, acid rain pollution, water resources cri-sis, land desertization, forest decrease, water and soil loss, species deracination, poisonous chemical ...Environmental crisis: serious greenhouse effect, destroyed ozonosphere, acid rain pollution, water resources cri-sis, land desertization, forest decrease, water and soil loss, species deracination, poisonous chemical pollution...... Dripping andleakage phenomena during chemical process, not only cause economic losses but also cause serious pollution accident and also could damage people's health. Develop green chemical industry and adopt green technology are the important ways to reduce pollution and to advance chemical sustainable development.展开更多
Fluorinated diols(FDO)with dangling chain were introduced into polyether urethanes(PEUs)as chain extender in order to achieve internal plasticization.Based on temperature dependent Fourier transform infrared(FTIR)spec...Fluorinated diols(FDO)with dangling chain were introduced into polyether urethanes(PEUs)as chain extender in order to achieve internal plasticization.Based on temperature dependent Fourier transform infrared(FTIR)spectroscopy results,the fluorinated polyether urethanes(FPEUs)exhibited weaker hydrogen bonding between C=O and N―H groups with addition of FDO.The crystallinity of hard domain was destroyed determined by thermal analysis.Combined with the results of dynamic mechanical analysis(DMA)and dissipative particle dynamics(DPD)simulation,it was proved that more loosely aggregated hard domains with weakened interaction separated from soft segment were formed.Rheological analysis indicated that FDO reduced the complex viscosity and viscous flow activation energy which endowed the polymer with more flexibility.Despite the loss of hydrogen bonds,there was no significant decline in mechanical property resulting from the decrease of hard segment dissolved in soft segment phase.The presence of fluorinated carbon side chain could function as internal plasticizer and contribute to the processability of polyurethane.展开更多
By using the molecular dynamics simulation,we have studied the dynamic behaviors of small energetic clusters deposited on the surface.We find that,at incident energy as low as 1.0eV/atom,the structure of the cluster i...By using the molecular dynamics simulation,we have studied the dynamic behaviors of small energetic clusters deposited on the surface.We find that,at incident energy as low as 1.0eV/atom,the structure of the cluster is destroyed and cluster atoms form an epitaxial layer above the surface.At high energy incidence,the site exchange between cluster atom and surface atom is observed.The effects of the cluster size and orientation are discussed.展开更多
The periodic variation of motion of 171Yb+ stored ion in a Paul r.f.trap is observed.The reason of which and its influence to the uncertainty and stability of stored ton frequency standard are going to be studied.
The paper points out that the deep reason why modern computer system fails to defense malware lies in that user has no right to control the access of information, and proposes an explicit authorization mechanism. Its ...The paper points out that the deep reason why modern computer system fails to defense malware lies in that user has no right to control the access of information, and proposes an explicit authorization mechanism. Its basic idea is that user explicitly authorizes program the file set it can access, and monitor all file access operations; once program requests to access file out of the authorized file set, refuse it, and this means that the program is malicious or has design errors. Computers based on this novel mechanism can protect information from attacking reliably, and have good software and hardware compatibility. A testing system is presented to validate our theory.展开更多
文摘This paper looks into David Herbert Lawrence＇s characterization of Mrs. Morel in his famous novel Sons and Lovers （1962）. Mrs. Morel has long been regarded by feminist critics as the destroyed, a victim destroyed by the male-dominated society, and her son Paul has been viewed as a destroyer of women. Based on a close reading of the novel, this paper examines Lawrence＇s characterization of Mrs. Morel and reveals that Mrs Morel actually belongs to the destroyer instead of the destroyed through an analysis of her relationship with the three male characters in the novel, thus providing new insights into the understanding of this classic novel.
文摘An unusual bird is destroying crops and angering farmers in north-eastern Italy:the flamingo.Flamingos are relatively recent arrivals in the area,and have settled into the flooded fields that produce rice in Ferrara Province,between Venice and Ravenna.The birds aren't targeting the rice seedlings but use their feet to stir up(搅动)the soil and grab molluscs,algae or insects from the shallow water.These grains of rice are items that have suffered damage.
基金supported by the National Key Research and Development Program of China(2021YFF0703600)。
文摘Highlights The RT-RAA-VF assay developed for the NiV P gene can perform rapid detection of NiV within 20 min at 42℃ with high specificity.This assay is capable of attaining sensitivity to a single copy of NiV RNA transcripts.This assay effectively avoids false positives caused by aerosol contamination with a sealed disposable nucleic acid visualization test paper device.
基金the National Natural Science Foundation of China(Nos.50674090 and 50804047)the Research Fund of the State Key Laboratory of Coal Resources and Mine Safety,CUMT(No.3Y080015)the Key Program of the National Natural Science Foundation of China(No.51134023)
文摘In order to overcome the heavy casualties caused by gas explosion,we verified the propagation law of shock wave in pipeline and the overpressure distribution of gas explosion by similar experiments according to the analyses of reasons for casualty and ventilation system model destroyed by gas explosion in the mining face.We summarized the gas composition after the explosion and its danger,analyzed the effects of the gas explosion shock wave to ventilation system and facilities and the laws of toxic gas spread and diffusion in the ventilation network after the explosion.We presented a technical proposal to control the smoke and recover the ventilation system after a gas explosion and developed a reserve air door and control system that were embed in the lane,and could close automatically in conditions of no pressure and electricity.The results showed that the reserve air door normally opened and could close automatically controlling the smoke flow and resuming the ventilation system when the gas explosion shock wave destroyed the original shutting air door which resulted in the air short circuit.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11604156 and 11474166)the Science and Technology Cooperation Projects of China and Romania(Grant No.42-23)+2 种基金the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20161013)the Postdoctoral Science Foundation of China(Grant No.2016M591874)the Priority Academic Program Development of Jiangsu Higher Education Institutions,China
文摘As an effective therapeutic modality, high-intensity focused ultrasound（HIFU） can destroy tumour tissues by thermocoagulation with less metastasis, but it is still limited by inaccurate non-invasive temperature monitoring and efficacy evaluation. A model of electrical impedance measurement during HIFU therapy was established using the temperatureimpedance relationship. Based on the simulations of acoustic pressure, temperature, and electrical conductivity, the impedance of the phantom was calculated and experimentally demonstrated for different values of acoustic power values and treatment time. We proved that the relative impedance variation（RIV） increases linearly with the increasing treatment time at a fixed acoustic power, and the relative impedance variation rate shows a linear relationship with the acoustic power.The RIV and treatment time required for HIFU treatment efficacy are inversely proportional to the acoustic power and the square of acoustic power, respectively. The favourable results suggest that RIV can be used as an efficient indicator for noninvasive temperature monitoring and efficacy evaluation and may provide new strategy for accurate dose control of HIFU therapy.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11275099,11435006 and 11405130the Double First-Class University Construction Project of Northwest University
文摘By throwing a particle with electric charge and angular momentum into the black holes, much evidence shows that the naked singularity of some （3＋1）-dimensional black holes might be seen, which is not allowed in the weak cosmic censorship conjecture. In this study, we consider a （2＋1）-dimensional Peldan black hole and find that it could be destroyed under certain conditions in both extreme and near-extreme cases.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11275099,11435006 and 11405130
文摘Neglecting the self-force, self-energy and radiative effects, we follow the spirit of Wald＇s gedanken experiment and further discuss whether an extremal Kerr-Newman-AdS （KNA） black hole can turn into a naked singularity when it captures charged and spinning massive particles. It is found that feeding a test particle into an extremal KNA black hole could lead to a violation of cosmic censorship for the black hole.
基金Funded by the National Natural Science Foundation of China(No.51472191)the Wuhan City Chenguang Project(No.2014070404010208)+2 种基金the Natural Science Foundation of Hubei Province(Nos.2014CFB343 and 2014CFB859)the Doctoral Program of Higher Education(No.20130143110013)the Key Technology Innovation Project of Hubei Province(No.2013AAA017)
文摘The corrosion of ECR glass fiber was investigated by the analysis methods of weight loss ratio under different acids and at various durations.Weight loss,leaching of cations,and surface composition of ECR glass fiber were analyzed.The corrosion mechanism of ECR glass fiber in acid environment was also discussed.The experimental results showed that the corrosion degree of ECR glass fiber in different acids obeyed the order： HNO3〉H2SO4〉HCl.The acid effects on corrosion of ECR glass fiberis were totally different.Hydrochloric acid mainly destroyed the network structure of [AlO4],while sulfuric acid and nitric acid mainly destroyed the structure of [SiO4].The acid resistance of ECR glass fiber is much better than that of E glass fiber due to the generation of intermediate product silicic acid gel Si（OH）4 during ion exchange.It can adhere to the glass surface to form a thin film and hinder the proceeding of corrosion.
文摘For clinical trial of Medicinal synthetic Aluminum-magnesium silicate (MSAMS, Antivirt<sup>®</sup>), on viral loads and CD4-lymphocytes counts of HIV/AIDS patients, 10 volunteers were treated. Their blood samples were tested for viral loads and for CD4-lymphocytes counts, before the treatment and every 4 weeks during the medication. The regimen was: MSAMS (50 mg/kg), MSAMS-stabilized Ampicillin trihydrate (7.5 mg/kg) and immunace extra protection<sup>®</sup> (1 tablet/day), for 4 weeks. Then, it was reduced to 50 mg/kg (MSAMS) and the immune stimulant. When their viral loads become undetectable, they would be treated for additional 4 weeks. Initially, the Antivirt<sup>®</sup>-regimen appeared to worsen both HIV infection-load and immune deficiency but later relieved them. Patients’ mean-viral load increased (P = 0.020), from 1820.30 ± 868.75 to 2855.90 ± 960.98, after 4 weeks before reducing (P = 0.030) to 1565.20 ± 743.17, after 8 weeks. Similarly, their mean-CD4-lymphocytes count reduced (P = 0.008) from 496.80 ± 194.39 to 263.90 ± 149.26, after 4 weeks before improving (P = 0.001) to 507.90 ± 133.19, after 8 weeks.
文摘Hammerhead ribozymes are small RNA moleculesthat bind to a complementary sequence of RNA andcleave that sequence at a conserved triplet NUX (N =G, A, X = A, U, C). ln comparison with ilntisensemolecuIes, ribozymes not only bind to target RNA butalso cleave the target at predicted sites. They havebeen used as molecular agents to destroy either viralRNA or oncogene transcripts in human cancers. Manyhuman cervical and oral carcinomas express RNA
文摘Environmental crisis: serious greenhouse effect, destroyed ozonosphere, acid rain pollution, water resources cri-sis, land desertization, forest decrease, water and soil loss, species deracination, poisonous chemical pollution...... Dripping andleakage phenomena during chemical process, not only cause economic losses but also cause serious pollution accident and also could damage people's health. Develop green chemical industry and adopt green technology are the important ways to reduce pollution and to advance chemical sustainable development.
基金financially supported by the National Natural Science Foundation of China(Nos.51973134 and 51703139)the State Key Research Development Program of China(No.2020YFC1107000)+2 种基金Fund of Cooperation of Sichuan UniversityDazhou(No.2020CDDZ-14)Chengdu Scientific Program R&D Key Project(No.2019-YF05-00156-SN)the project of the Science and Technology Department in Sichuan Province(No.2020YJ0230)。
文摘Fluorinated diols(FDO)with dangling chain were introduced into polyether urethanes(PEUs)as chain extender in order to achieve internal plasticization.Based on temperature dependent Fourier transform infrared(FTIR)spectroscopy results,the fluorinated polyether urethanes(FPEUs)exhibited weaker hydrogen bonding between C=O and N―H groups with addition of FDO.The crystallinity of hard domain was destroyed determined by thermal analysis.Combined with the results of dynamic mechanical analysis(DMA)and dissipative particle dynamics(DPD)simulation,it was proved that more loosely aggregated hard domains with weakened interaction separated from soft segment were formed.Rheological analysis indicated that FDO reduced the complex viscosity and viscous flow activation energy which endowed the polymer with more flexibility.Despite the loss of hydrogen bonds,there was no significant decline in mechanical property resulting from the decrease of hard segment dissolved in soft segment phase.The presence of fluorinated carbon side chain could function as internal plasticizer and contribute to the processability of polyurethane.
基金Supported by the National Natural Science Foundation of China under Grant Nos.19874063 and 1992541&and the Chinese Academy of Sciences under Grant LWTZ-1289.
文摘By using the molecular dynamics simulation,we have studied the dynamic behaviors of small energetic clusters deposited on the surface.We find that,at incident energy as low as 1.0eV/atom,the structure of the cluster is destroyed and cluster atoms form an epitaxial layer above the surface.At high energy incidence,the site exchange between cluster atom and surface atom is observed.The effects of the cluster size and orientation are discussed.
文摘The periodic variation of motion of 171Yb+ stored ion in a Paul r.f.trap is observed.The reason of which and its influence to the uncertainty and stability of stored ton frequency standard are going to be studied.
基金Supported by the Foundation of National Labora-tory for Modern Communications(51436050505KG0101)
文摘The paper points out that the deep reason why modern computer system fails to defense malware lies in that user has no right to control the access of information, and proposes an explicit authorization mechanism. Its basic idea is that user explicitly authorizes program the file set it can access, and monitor all file access operations; once program requests to access file out of the authorized file set, refuse it, and this means that the program is malicious or has design errors. Computers based on this novel mechanism can protect information from attacking reliably, and have good software and hardware compatibility. A testing system is presented to validate our theory.
