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Experimental study on explosive mechanism of spontaneous combustion gangue dump

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Journal of Coal Science & Engineering(China) 2009年第4期15卷 394-398页

作者： PAN Rong-kun yu ming-gao LU Lai-xiang School of Safety ＆ Science Engineering Henan Polytechnic University Jiaozuo 454000 China

In order to explore the reason for the frequency explosion of spontaneous combustion coal gangue dump and get to know their explosion mechanism, established the experiment platform about spontaneous combustion coal gangue dump interoperable water. The gangue dump was heated using the external heat source, and rainy weather through water mist was simulated. Simulated experiment about explosion of spontaneous combustion coal gangue dump was carried out on the different conditions of the rainfall or not. The unusual gases produced in the course of gangue combustion and the changes in temperature were observed, and their impacts on the explosion of gangue dump were analyzed. The experimental results show that overall warming phenomenon of the gangue dump after watering occurred, the amount of H2 is three times than that before watering, and the amount of CO is far greater than that on the conditions of no-watering, at the same time combining with local observation and tests. It is found that the content of the oxygen reduce with the temperature increasing; however, gangue dump internal hydrogen content increase unusually on the rainfall conditions at 90 ℃, but the local measuring points reach the explosion limit. The existence of the CO and H2 is the main reason for inducing the explosion of spontaneous combustion coal gangue dump.

关键词： coal gangue spontaneous combustion gangue dump explosive mechanism

Combination of dura turning-over and decompressive craniectomy： a new pattern of surgery for cerebral infarction caused by craniocerebral gunshot injury

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Military Medical Research 2018年第1期5卷 85-89页

作者： Qi-Yong Mei Yao Li Chao He Hong-Wei Shan yun-kun Wang Yan Dong ming-kun yu Li-Jun Hou Department of Neurosurgery Shanghai Changzheng Hospital Second Military Medical University Shanghai Neurosurgical Institute Shanghai 200003 China Department of Hepatic Surgery III Eastern Hepatobiliary Surgical Hospital Shanghai 200438 China Department of Emergency Shanghai Changzheng Hospital Second Military Medical University Shanghai 200003 China

Background:Craniocerebral gunshot injury refers to a wound caused by a bullet passing through or lodged in brain tissue,resulting in the loss of function of a certain area or other fatal damage to the human *** gunshot injury is usually life-threatening and is very common in modern warfare,accounting for the majority of battle *** of the patients suffer from acute cerebral infarction caused by vascular *** of early and solid battlefield emergency medical interference adds to the risk of death among the *** presentation:We present a 24-year-old man who was shot with a shotgun from a distance of 15m in an accidental ***-seven grape shots were found on his body surface by physical examination.A computed tomography(CT)scan demonstrated large areas of low-density shadows in his right parietal lobe and right temporal lobe with the midline shifting to the left side 2 days ***,the patient was transferred to our emergency medical center at Changzheng Hospital in *** computed tomography angiography(CTA)showed a high-density shadow in the initial part of the right middle cerebral *** branches after the initial part were *** medical attention and decompressive craniotomy(DC)surgery contributed to the final recovery from cerebral infarction of this ***:Bullets can penetrate or be lodged in the brain,causing intracranial *** bullets lodged in the brain can result in stenosis and embolism of a cerebral artery,causing acute cerebral *** dura turning-over surgery with DC surgery can not only decrease intracranial pressure,which can increase the blood supply for hypertension-induced vessel stenosis,but also help vessels outside the dura mater grow into ischemic areas of the cerebral ***,this new pattern of surgery needs further support from evidence-based medicine.

关键词： Gunshot cerebral injury Infarction Dura turning-over Decompressive craniectomy

Design and Implementation of Indoor Positioning System using Bluetooth Low Energy

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Design and Implementation of Indoor Positioning System using...

Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

作者： Xianfeng Hu kun-ming yu Ken H.Chuang Huan-Po Hsu Chung-Hsing Liu Shang-Wei Tung Yen-Chiu Chen ming-yuan Lei Nancy Tsai Program in Engineering Science Chung Hua University Dept.of Computer Science & Information Engineering Chung Hua University Dept.of Information Management Chung Hua University

Most of the positioning systems nowadays require *** indoor environments,however,GPS signals cannot be received properly due to the obstructions of the walls in the ***,other techniques such as RFID,Zigbee,WIFI or Bluetooth,are used based on the power loss,cost,or transmission range *** study,conducted at the AI+ Experience Center of Chung Hua University,adopts Bluetooth 5.0-based equipment and uses the received signal strength indication（RSSI） and triangulation method to perform indoor *** results show that Bluetooth positioning is more accurate in the sense that when the distance is within 1～3 meters,the error with the actual position is about 1 meter,which is more accurate than the RFID or WIFI positioning with the error of 2～3 meters.

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： ming‑yuan yu Jing Wu Guang Yin Fan‑Zhen Jiao Zhong‑Zhen yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

Laparoscopic liver resection utilizing the ventral avascular area of the inferior vena cava:A retrospective cohort study

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World Journal of Gastroenterology 2025年第1期31卷 42-57页

作者： kun Huang Zhu Chen Heng Xiao Hai-Yang Hu Xing-yu Chen Cheng-You Du Xiang Lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400000China Department of General Surgery Mianyang Hospital of Traditional Chinese MedicineMianyang 621000Sichuan ProvinceChina

BACKGROUND Laparoscopic liver resection(LLR)can be challenging due to the difficulty of establishing a retrohepatic tunnel under *** the third hepatic hilum before parenchymal transection often leads to significant liver mobilization,tumor compression,and bleeding from the short hepatic veins(SHVs).This study introduces a novel technique utilizing the ventral avascular area of the inferior vena cava(IVC),allowing SHVs to be addressed after parenchymal transection,thereby reducing surgical complexity and improving outcomes in in situ *** To introduce and evaluate a novel LLR technique using the ventral avascular area of the IVC and compare its short-term outcomes with conventional *** The clinical cohort data of patients with pathologically confirmed hepatocellular carcinoma or intrahepatic cholangiocarcinoma who underwent conventional LLR and novel LLR between July 2021 and July 2023 at the First Affiliated Hospital of Chongqing Medical University were retrospectively *** novel LLR,we initially separated the caudate lobe from the IVC using dissecting forceps along the ventral avascular area of the ***,we transected the parenchyma of the left and right caudate lobes from the caudal side to the cephalic side using the avascular area as a ***,we addressed the SHVs and finally dissected the root of the right hepatic vein or left hepatic *** short-term postoperative outcomes and oncological results of the two approaches were evaluated and *** A total of 256 patients were included,with 150(58.59%)undergoing conventional LLR and 106(41.41%)undergoing novel *** novel technique resulted in significantly larger tumor resections(6.47±2.96 cm vs 4.01±2.33 cm,P<0.001),shorter operative times(199.57±60.37 minutes vs 262.33±83.90 minutes,P<0.001),less intraoperative blood loss(206.92±37.09 mL vs 363.34±131.27 mL,P<0.001),and greater resection volume(345.11±31.40 mL vs 264.38±31.98 mL,P<0.001)comp

关键词： Laparoscopic liver resection Inferior vena cava Retrohepatic tunnel Short hepatic veins Complex liver tumors Intraoperative bleeding control

Loss-of-function mutations of microRNA-142-3p promote ASH1L expression to induce immune evasion and hepatocellular carcinoma progression

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World Journal of Gastroenterology 2025年第1期31卷 126-145页

作者： Xing-Hui yu Yan Xie Jian yu kun-Ning Zhang Zhou-Bo Guo Di Wang Zhao-Xian Li Wei-Qi Zhang yu-Ying Tan Li Zhang Wen-Tao Jiang School of Medicine Nankai UniversityTianjin 300192China Tianjin Key Laboratory of Molecular Diagnosis and Treatment of Liver Cancer Tianjin First Center HospitalTianjin 300192China Department of Liver Transplantation Tianjin First Center HospitalTianjin 300192China First Central Clinical School Tianjin Medical UniversityTianjin 300192China

BACKGROUND Hepatocellular carcinoma(HCC)has been a pervasive malignancy throughout the world with elevated *** therapeutic targets are beneficial to treat and predict the ***,the exact molecular mechanisms leading to the progression of HCC are still *** has shown that the microRNA-142-3p level decreases in HCC,whereas bioinformatics analysis of the cancer genome atlas database shows the ASH1L expression increased among liver tumor *** this paper,we will explore the effects and mechanisms of microRNA-142-3p and ASH1L affect the prognosis of HCC patients and HCC cell bioactivity,and the association between *** To investigate the effects and mechanisms of microRNA-142-3p and ASH1L on the HCC cell bioactivity and prognosis of HCC *** In this study,we grouped HCC patients according to their immunohistochemistry results of ASH1L with pathological tissues,and retrospectively analyzed the prognosis of HCC ***,explored the roles and mechanisms of microRNA-142-3p and ASH1L by cellular and animal experiments,which involved the following experimental methods:Immunohistochemical staining,western blot,quantitative real-time-polymerase chain reaction,flow cytometric analysis,tumor xenografts in nude mice,*** statistical methods involved in this study contained t-test,one-way analysis of variance,theχ^(2)test,the Kaplan-Meier approach and the log-rank *** In this study,we found that HCC patients with high expression of ASH1L possess a more recurrence rate as well as a decreased overall survival ***1L promotes the tumorigenicity of HCC and microRNA-142-3p exhibits reduced expression in HCC tissues and interacts with ASH1L through targeting the ASH1L 3′untranslated ***,microRNA-142-3p promotes apoptosis and inhibits proliferation,invasion,and migration of HCC cell lines in vitro via *** the exploration mechanism,we found ASH1L may promote an immunosuppressive mi

关键词： Hepatocellular carcinoma MicroRNA-142-3p ASH1L Immune evasion Tumor immune microenvironment Apoptosis

Expression Profile Analysis of Genes Involved in Brassinosteroid Biosynthesis Pathway in Cotton Fiber Development

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棉花学报 2008年第S1期20卷 59-页

作者： LUO ming,XIAO Zhong-yi,TAN kun-ling,HU ming-yu,LIAO Peng(Key Laboratory of Biotechnology and Crop Quality Improvement,Ministry of Agriculture Biotechnology Research Center,Southwest University,Chongqing 400716,China) Key Laboratory of Biotechnology and Crop Quality Improvement Ministry of Agriculture Biotechnology Research Center Southwest UniversityChongqing 400716China

Cotton(Gossypium hirsutum L.) is the leading fiber crop and one of the mainstays of the economy in the *** fibers,as the main product of cotton plants,are unicellular,linear

关键词： DPA Expression Profile Analysis of Genes Involved in Brassinosteroid Biosynthesis Pathway in Cotton Fiber Development

Surface micro-arrays enhancing electromagnetic interference shielding of polydimethylsiloxane/multiwalled carbon nanotubes nanocomposites

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Nano Research 2025年第1期18卷 508-519页

作者： Ke Jiang Zhi Chen Ji yu Chen Zheng Shan Huang ming Wang Chongqing Key Laboratory of Soft-Matter Material Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China School of Mechanics Civil Engineering and ArchitecturesNorthwestern Polytechnical UniversityXi’an 710072China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China

Herein,the electromagnetic shielding performance of surface concave-convex(SC)and zig-zag micro-arrays was studied by using a simulation prediction and a three-dimensional(3D)printing custom ***,surface stripe concaveconvex(SSC)and surface cylindrical concave-convex(SCC)micro-arrays with or without zig-zag micro-arrays are designed,and their shielding performance is simulated in multi-bands(C-,X-band).The multiwalled carbon nanotubes/polydimethylsiloxane composites(MWCNT/PDMS)with different SC structures and different electrical conductivity are molded in acrylonitrile-butadiene-styrene copolymer(ABS)molds which are printed by a 3D *** results show that the electromagnetic interference shielding effectiveness(EMI SE)of the samples can be enhanced by constructing the SC micro-arrays with zig-zag micro-arrays,and improving with the increase of conductivity and *** addition,the shielding mechanism of the SC-MWCNT/PDMS composites is investigated and discussed by an electromagnetic simulation.

关键词： surface micro-arrays electrical properties electromagnetic interference(EMI)shielding three-dimensional(3D)printing

The discovery of the mini-protease:Seryl Histidine Dipeptide

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The discovery of the mini-protease:Seryl Histidine Dipeptide