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Shock response of cyclotetramethylene tetranitramine(HMX)single crystal at elevated temperatures

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Defence Technology（防务技术） 2023年第3期21卷 147-163页

作者： Kai Ding Xin-Jie Wang zhuo-ping Duan Yan-Qing Wu Feng-Lei Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081PR China

To investigate the shock response of cyclotetramethylene tetranitramine(HMX)single crystals at elevated temperatures(below the phase transition point),plate impact experiments at elevated temperatures were designed and *** HMX/window interface particle velocities at temperatures of 300 K,373 K,and 423 K were measured by the velocity interferometry system for any reflector(VISAR)*** further analyze the related mesoscale deformation mechanisms,a nonlinear thermoelastic-viscoplastic model was developed,which considers thermal activation and phonon drag dislocation slip *** proposed model could well reproduce the measured thermal hardening behavior of Hugoniot elastic limit(HEL)of HMX single *** elevated temperatures,the reduced dislocation mobility was observed,which stems from both phonon scattering and radiative damping *** speaking,radiative damping contributes less than phonon scattering to thermal hardening *** calibrated model was further used to predict shock response of HMX single crystals with different thicknesses at different initial *** the stress relaxation and elastic precursor decrease with thickness are mainly due to the rapid dislocation *** insights shed light on the interplay between dislocation motion and dislocation generation in thermal hardening behavior,stress relaxation,and elastic precursor decay,which serves to reveal the mesoscale deformation mechanisms at elevated temperatures.

关键词： deformation elevated dislocation

Combustion crack-network reaction evolution model for highly-confined explosives

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Defence Technology（防务技术） 2023年第8期26卷 54-67页

作者： zhuo-ping Duan Meng-Jing Bai Zhi-ling Bai Xin-jie Wang Feng-lei Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

The evolution behavior of combustion crack reaction of highly confined solid explosives after non-shock ignition is governed by multiple dynamic processes,including intrinsic combustion of explosives,crack propagation,and rapid growth of combustion surface ***,the pressure increase can accelerate the combustion rate of explosives,and the crack propagation can enlarge the combustion surface *** coupling between these two effects leads to the self-enhanced combustion of explosive charge system,which is the key mechanism for the reaction development after *** this study,combustion cracknetwork(CCN) model is established to describe the evolution of combustion crack reaction of highly confined solid explosives after non-shock ignition and quantify the reaction *** feasibility of the model is verified by comparing the computational and experimental *** results reveal that an increase in charge structure size causes an increase in the time of crack pressurization and extension of cracks due to the high temperature-generated gas flow and surface combustion during the initial stage of explosive reaction,but when the casing is fractured,the larger the charge structure,the more violent the late reaction and the larger the charge reaction *** input pressure has no obvious influence on the final reaction ***,a larger venting hole area leads to better pressure relief effect,which causes slower pressure growth inside *** reserved ullage volume causes longer lowpressure induction stage,which further restrains the internal pressure ***,the stronger the casing constraint,the more rapid the self-enhanced combustion of the high temperaturegenerated gas,which results in more violent charge reaction and larger charge reaction degree during casing ***,the proposed model can clarify the effects of intrinsic combustion rate of explosives,charge structure size,input pressure,relief area,ullage volume,a

关键词： Solid explosives Non-shock ignition Self-enhanced combustion Combustion crack-network(CCN)model Relief area Reaction degree

Clinical Characteristics, Imaging Findings and Surgical Outcomes of Chiari Malformation Type I in Pediatric and Adult Patients

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Current Medical Science 2018年第2期38卷 289-295页

作者： zhuo-wei LEI Shi-qiang WU zhuo ZHANG Yang HAN Jun-wen WANG Feng LI Kai shu Department of Orthopedics Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China Department of Neurosurgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China

A growing number of children and adolescents are being diagnosed as Chiari malformation type I （CM- I ） for behavioral disorders, developmental delay, seizures, or abnormal orpharyngeal function. The aim of this study was to compare the clinical characteristics, imaging findings and surgical outcomes of CM- I in pediatric and adult patients. Between January 2014 and June 2017, 84 patients with CM- I underwent surgical treatment in our department. We divided the patients into two groups： pediatric group （n=l 1, age 〈18 years） and adult group （n=73, age 〉18 years）. Data on clinical characteristics, imaging findings, surgical outcomes, and prognosis were retrospectively reviewed and compared between these two groups. For clinical presentation, scoliosis （36.4%） and developmental delay （36.4%） were more common in pediatric patients, whereas, sensory disturbance （58.9%） and motor weakness （41. 1%） were more common in adult patients. Imaging findings showed that the incidence of hydrocephalus and craniovertebral junctional abnormalities was significantly higher in pediatric group than in adult group （P〈0.05）. Compared to adult group, pediatric group showed a better improvement or resolution of syrinx and tonsillar herniation after surgical treatments （P〈0.05）. The total Chicago Chiari Outcome Scale （CCOS） score in pediatric patients at the last follow- up was significantly higher than that in adult patients （P=0.002）. In conclusion, the clinical characteristics and imaging findings appeared to be different in pediatric and adult patients with CM- I. The surgical outcomes of pediatric patients were shown to be significantly better than those of adult patients.

关键词： Chiari malformation type I adult patients pediatric patients clinical manifestations surgical outcome

A Future Perspective in Forensic Medicine in China:Diatomological Mapping of Water Bodies

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Journal of Forensic Science and Medicine 2016年第2期2卷 107-110页

作者： Luo zhuo shu Lin Peng Song Division of Forensic Science Fujian Provincial Public Security DepartmentFujian Provincial Key Laboratory of Forensic Science and TechnologyFuzhou350003China

Diatom test(forensic diatomology)is commonly considered as the“gold standard”in the diagnosis of drowning in forensic *** diatomology contributes significantly not only in determining the mode of death but also in determining the site of drowning because of various distribution characterizations of diatoms in different water bodies or different ***,it is believed that diatomological mapping will be interest to forensic pathologists in the future ***,we reviewed the all the studies on the distribution characterizations of diatoms in different water bodies in China *** present paper summarized the current situation and the limitations of the previous ***,we suggested that it was necessary to establish a systematized and standardized diatomological mapping program *** study also encourages diatomological mapping for forensic characterization of water bodies for a prolonged time.

关键词： Diatom diatomological mapping drowning forensic pathology perspective study

Successive magnetic ordering in two Co^(Ⅱ)-ladder metal-organic frameworks

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Science China Chemistry 2021年第1期64卷 22-28页

作者： Zhu zhuo Guoling Li Chenglin shu Wei Wang Caiping Liu Mingyan Wu Yougui Huang Maochun Hong CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesXiamen 361021China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen 361021China Fujian Institute of Research on the Structure of Matter Chinese Academy of SciencesFuzhou 350002China

Metal-organic frameworks showing successive magnetic ordering are far less common than inorganic ***,we report two metal-organic frameworks[Co^Ⅱ(ox)(bphy)·0.1(DMF)·0.1(Me OH)]n(1)and[Co3^Ⅱ(ox)3(bphy)2(DMF)2]n(2)comprised of zigzag and necklace Co^Ⅱ-ladders,*** with a previously reported compound[Co^Ⅱ(ox)(bphy)·0.2(DMF)]n(3)consisting of spiraling zigzag Co^Ⅱ-ladders,these three compounds provide a good system for comparative structural and magnetic *** magnetic analysis reveals that the three compounds undergo long-range magnetic ordering at^2.6 K but exhibit vastly different short-range magnetic correlations:compound 1 shows short-range spin-canted antiferromagnetism ordering at^14.0 K;compound 2 demonstrates successive short-range antiferromagnetism ordering at^15.5and^12.6 K;compound 3 shows slow magnetic relaxation with Tb≈4.6 *** results demonstrate long-range magnetic ordering is readily accessible in the frameworks of ox^2-bridging Co^Ⅱ-ladders linked by bphy,where short-range magnetic correlations can be systematicly tuned by the Co^Ⅱ-ladder structures.

关键词： spin-ladder successive magnetic ordering porosity selective capture

Energy Management Strategy Coordinating Lithium-ion Battery and Ultra-capacitor for Electric Vehicle 36

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Energy Management Strategy Coordinating Lithium-ion Battery ...

Estrogen up-regulates MMP2/9 expression in endometrial epithelial cell via VEGF-ERK1/2 pathway

第36届中国控制会议

作者： zhuo Kong Naxin Cui ping Li School of Control Science and Engineering Shandong University

ISBN: (纸本)9781538629185

A real-time energy optimization management for electric vehicles with hybrid energy storage system（HESS） is presented in this *** HESS is combined with lithium-ion battery and *** on the quadratic optimization strategy,the power relationship of hybrid energy storage system and the battery power loss characteristics is analyzed.A quadratic performance index is established to minimize the power loss of the battery under the condition of meeting the desired vehicle velocity *** joint simulation results show that the allocation of power is optimized,and the lithium-ion battery workload is reduced,as well as lithium-ion battery power ***,the research is of great significance to improve the dynamic performance of electric vehicles and extend the driving range.

关键词： hybrid energy storage system(HESS) electric vehicle(EV) energy management strategy(EMS)

来源： cnki会议评论

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Asian Pacific Journal of Tropical Medicine 2013年第10期6卷 826-830页

作者： Bao Shan Wang Li shu-Ying Yang zhuo-Ri Li Department of Gynaecology and Obstetrics of Hainan People's Hospital

Objective:To study the effect of estrogen on anovulatory dysfunctional uterine bleeding(ADUB).Methods:Primary endometrial epithelial cells of Hainan Lizu female was cultured and hydrolylic activity of gelalinase was determined by gelatin zymography *** mRNA and protein synthesis was blocked respectively to determine whether the increased expression of MMP-2/9 was induced by *** expression of VEGF was blocked by *** treatment with various ***-9,VEGF,total Erk and phosphorylated Erk expression in primary uterine epithelial cells was detected by Western blotting *** MMP-2/9mRNA levels was measured by real-time ***:The activity and expression of MMP2/9 was inereased in the endometrium of patients with *** could up-regulate the expression of VEGF and activate Erk 1/2-Elk1 signal *** interference by siRNA,ERK1/2 pathway was blocked in cells,and the expression of MMP-2/9 was ***1/2 specific blocker U0126 blocked ERK phosphorylation,and it could down-regulate the expression of MMP-2/***:The results showed that the estrogen can increase the expression of VEGF,and thus activate ERK1/2 pathway to induce MMP-2/9 expression.

关键词： Dysfunctional uterine bleeding Matrix metalloproteinase 2 and 9 Vascular endothelial growth factor ERK1/2 signal pathway Estrogen Primary uterine epithelial cells

Case Report:Liquid-based cytology aids in primary fallopian tube cancer diagnosis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第8期10卷 635-638页

作者： zhuo REN Yun-ping ZHANG Hui-xia YANG Li-rong ZHU Department of Obstetrics and Gynecology Haidian District Maternal and Child Healtheare Hospital Beijing 100080 China Department of Obstetrics and Gynecology Peking University First Hospital Beijing 100034 China

Primary fallopian tube carcinoma(PFTC) is a rare malignant carcinoma among all genital tract *** occurs most commonly in postmenopausal women and is similar to ovarian malignancy historically and *** of its insidious onset and silent course,the diagnosis is made usually ***-based cytology(LBC) is a type of method for cervical cancer screening,but sometimes it may aid in making PFTC *** report a 47-year-old woman with PFTC,whose diagnosis was made with the aid of LBC.

关键词： Primary fallopian tube carcinoma (PFTC) Liquid-based cytology (LBC) Diagnosis

Synthesis of Novel Monophosphoramidite Ligands Derived from L-Proline for Rh-catalyzed Asymmetric Hydrogenation of α-Dehydroamino Acid Esters

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Chinese Chemical Letters 2005年第10期16卷 1321-1323页

作者： Qing Heng ZENG Xiang ping HU Xin Miao LIANG zhuo ZHENG Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 Graduate School of Chinese Academy of Sciences Beijing 100039

Two novel monophosphoramidites were synthesized through a five-step transformation from commercially available L-proline. In the Rh-catalyzed asymmetric hydrogenation of α-dehydroamino acid derivatives, ligand （Sc,... 详细信息

关键词： Monophosphoramidite L-proline Rh-catalyzed asymmetric hydrogenation α-dehydroamino acid.