检索结果-南通市图书馆

Microwave torrefaction of empty fruit bunch pellet:Simulation and validation of electric field and temperature distribution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bioresources and Bioproducts 2022年第4期7卷 270-277页

作者： Peter Nai Yuh Yek Sieng Huat Kong ming chiat law Changlei Xia Rock Keey Liew Teck Sung Sie Jun Wei Lim Su Shiung Lam Centre for Research of Innovation and Sustainable Development University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia School of Foundation Studies University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia Department of Mechanical Engineering Faculty of Engineering and ScienceCurtin University Malaysia CampusMiriSarawak 98009Malaysia Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China NV WESTERN PLT GeorgetownPenang 10400Malaysia Department of Fundamental and Applied Sciences HICoE-Centre for Biofuel and Biochemical ResearchInstitute of Self-Sustainable BuildingUniversity Technology PETRONASDarul RidzuanSeri IskandarPerak 32610Malaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)University Malaysia TerengganuKuala NerusTerengganu 21030Malaysia Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India

Microwave simulation is significant in identifying a reactor design allowing the biomass to be heated and processed *** study integrated the radio frequency and transient heat transfer modules to simulate the microwave distribution and investigated the performance of microwave heating in the *** simulation results were compared with the experimental findings us-ing the finite element analysis software of COMSOL MULTIPHYSICS to predict the temperature profile and electric field of microwave in the biomass(empty fruit bunch pellets).The higher temperature distribution was observed at the bottom and centre section of the empty fruit bunch pellet bed in the reactor,showing the uniqueness of microwave *** to the simula-tion results,the temperature profile obtained through the specific cavity geometry and dielectric properties agreed with the experimental temperature *** simulated temperature profile demonstrated a logarithmic increase of 120°C/min at the first 50 s followed by 50°C/min until 350 *** experimental temperature profile showed three different heating rates before reaching 300°C,including 78.3°C/min(50-120°C),30.6°C/min(121-250°C),and 105°C/min(250-300°C).The results of this study might contribute to the improvement of microwave heating in biomass torrefaction.

关键词： Microwave Torrefaction Simulation Energy Temperature

A middle-aged lady with a pyogenic liver abscess caused by Clostridium perfringens

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Hepatology 2012年第8期4卷 252-255页

作者： Siu-Tong law ming Kai Lee Division of Gastroenterology and Hepatology Department of Medicine and GeriatricsTuen Mun HospitalTuen MunHong KongChina

The pyogenic liver abscess caused by Clostridium perfringens (C. perfringens ) is a rare, but rapidly fatal infection. It is usually associated with malignancy and immunosuppression. We report the case of 50-year-old lady with the secondary liver metastases from rectal cancer presented with fever and epigastric pain. The identification of Grampositive bacilli septicaemia, the presence of gas-forming liver abscess and massive intravascular hemolysis should lead to the suspicion of C. perfringens infection. Here we review twenty cases published since 1990 and their clinical features are discussed. The importance of "an aggressive treatment policy" with multidisciplinary team approach is emphasized.

关键词： Pyogenic liver abscess Clostridium perfringens Infected hepatic metastases Liver abscess Gram-positive bacilli septicaemia

A Multi-Channel CMOS Analog Front-End Interface IC with 157.8 d B Current Detection Dynamic Range

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年第2期33卷 393-402页

作者： Kunyu WANG Wenjing XU Chengbin ZHANG Yanjun YANG Man-Kay law Li ZHOU Jie CHEN ming CHEN Institute of Microelectronics of the Chinese Academy of Science University of Chinese Academy of Sciences Zunyi Normal University Institute of Microelectronics and Dept.of ECE FST University of Macau

A high dynamic range and low-noise CMOS(complementary metal-oxide-semiconductor transistor)front-end interface integrated circuit(IC) with multi-channel detection is presented in this paper. Two different current detection channels, composed of a trans-impedance amplifier(TIA) and an integrator-differentiator TIA, are used to boost the current detection range. A capacitance-coupled instrument amplifier(CCIA) is also included to realize high precision voltage detection. A fourth-order sigma-delta modulator using a second-order loop filter and a second-order noise shaping integral quantizer is adopted to realize effective number of bits above 16 bits. The presented interface IC is implemented in 0.18-μm CMOS process with supply voltage of 3.3 V, and a proto-type electrochemical sensor platform with miniaturized sensor array is developed to verify the functionality of the interface IC. Measurement results indicate that the designed interface IC achieves 157.8 d B current detection dynamic range, and the measured input-referred current noise and voltage noise floor are 1.04 p A and 58.4 n V within 10 k Hz integration bandwidths,respectively.

关键词： Integrated circuits Sigma-delta modulation Semiconductor device measurement Voltage measurement Current measurement Noise Bandwidth

Impact of IPMOE on nursing tasks in the medical ward: A time-motion study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Nursing Sciences 2018年第1期5卷 50-56页

作者： ming Leung Kenny Kin Chung Chan Wing Leung Wong Alexander Chun Bon law Princess Margaret Hospital Hong KongChina Tuen Mun Hospital Hong KongChina Hong Kong Baptist University Hong KongChina

Introduction:The In-patient Medication Order Entry System (IPMOE) was first implemented in the medical ward of Princess Margaret Hospital,Hong *** was a local developed close-loop system including prescription,dispensing and administration *** on its impact on nursing tasks would be important for practice improvement and subsequent system ***:The study was conducted to quantify the nursing times across medication-associated tasks for paper-based MAR and computer-based IPMOE,including change in the tasks and time patterns before and after IPMOE ***:This was a prospective observation study in medical wards before (Jan 2014-Jun 2014) and after (Mar 2015-Jun 2015) the implementation of *** conducted 8-hr observation studies of individual nurses with a customized application to time various pre-categorized nursing *** inferences and interrupted time series analysis was performed to identify the change in the intercept and trends over time after ***:The average number of medication-related tasks was significantly reduced from 61.07 to 29.81,a reduction of 31.26 episodes per duty (P < 0.001,95% CI 22.9-39.63).The time for the medication-related tasks was reduced from 32 min (SD =21.57) to 26.57 min (SD =11.35) and the medication administration time increased from 37.93 min (SD-14.78) to 44.37 min (SD 19.45),but there was no overall significant difference in the time spent on each duty (P =0.315) between the two *** improving trend in the delayed effect was observed (P =0.03),which indicated a run-in period for new application was needed in clinical ***:Our study had shown the time motion observation could be applied to measure the impact of the IPMOE in a busy clinical *** classification of activities,validation,objective measurement and longitudinal evaluation,the method could be applied in various systems as well as different clinical settings in

关键词： In-patient medication order entry system Medication systems Nursing Time and motion studies

Microscratch of copper by a Rockwell C diamond indenter under a constant load

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nanotechnology and Precision Engineering 2021年第3期4卷 20-44页

作者： ming Liu School of Mechanical Engineering and Automation Fuzhou UniversityQishan CampusFuzhou 350116China

The scratch test is used for quality control mostly in phenomenological ways,and whether fracture toughness can be obtained from this test is still a matter of debate requiring further *** this paper,values of the fracture toughness of copper obtained by different scratch-based approaches are compared in order to examine the applicability of scratch-based methodologies to characterize the fracture toughness of soft *** scratch response of copper to a Rockwell C diamond indenter is studied under a constant normal load *** variations of penetration depth,residual depth,and residual scratch width with applied normal load are quantified from spherical to sphero-conical contact regimes by piecewise functions.A newly proposed size effect law is found to be the most suitable for scratch-based approaches to characterizing the fracture toughness of soft metallic materials with significant plasticity.A simple expression relating the nominal stress to the penetration depth is proposed for the spherical contact regime and gives almost the same value of fracture *** residual scratch width provides useful information on pile-up of material and on the spherical tip radius of the *** is found that the values of the fracture toughness obtained from the microscratch test are influenced by the data range for analysis.

关键词： Microscratching Rockwell C diamond probe Constant normal load Fracture toughness Residual scratch width

维普期刊数据库

Rare case of intussusception in an adult with acute myeloid leukemia

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第2期21卷 688-693页

作者： Man Fai law Cheuk Kei Wong Chun Yin Pang Hay Nun Chan Ho Kei Lai Chung Yin Ha Celia Ng Yiu ming Yeung Sze Fai Yip Department of Medicine Tuen Mun Hospital Department of Medicine and Therapeutics Prince of Wales Hospital Department of Radiology Kwong Wah Hospital Department of Pathology Tuen Mun Hospital

Intussusception is rarely reported in adult patients with acute leukemia. We report a case of intussusception in a 29-year-old woman with acute myeloid leukemia(AML). She developed right lower quadrant pain, fever, and vomiting on day 16 of induction *** examination showed tenderness and guarding at the right lower quadrant of the abdomen. Abdominal computed tomography(CT) showed distension of the cecum and ascending colon, which were filled with loops of small bowel, and herniation of the ileocecal valve into the cecum. We proceeded to laparotomy and revealed ileocecal intussusception with the ileocecal valve as the leading point. The terminal ileum was thickened and invaginated into the cecum, which showed gangrenous changes. Right hemicolectomy was performed and microscopic examination of the colonic tissue showed infiltration of leukemic cells. The patient recovered after the operation and was subsequently able to continue treatment for AML. This case demonstrates that the diagnosis of intussusception is difficult because the presenting symptoms can be non-specific, but abdominal CT can be informative for preoperative diagnosis. Resection of the involved bowel is recommended when malignancy is suspected or confirmed. Intussusception should be considered in any leukemia patients presenting with acute abdomen. A high index of clinical suspicion is important for early diagnosis.

关键词： Intussusception Acute leukemia Abdominal pain Colo

Charge balance materials for homojunction and heterojunction OLED applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Optoelectronics 2009年第4期2卷 435-441页

作者： Louis M.LEUNG Yik-Chung law Michael Y.WONG Tik-Ho LEE Kin ming LAI Lok-Yee TANG Department of Chemistry and Centre for Advanced Luminescence Materials Hong Kong Baptist University

In a homojunction device, a single organic layer assumes the multiple roles of hole, electron transportation, and emitter. Its ease in processing is highly desirable from the manufacturing point of view. In this paper, we shall describe the synthesis of a range of bipolar small molecules and conductive vinyl polymers for application in homojunction and heterojunction organic light emitting diodes（OLEDs）. The bipolar materials, in general, consist of three basic building blocks: an arylamine, a 1,3,4-oxadiazole, and a polycyclic aromatic moiety. The achievement of charge balance can be validated either by direct measurement of electron/hole mobility or indirectly via optimization of device properties.A series of conductive vinyl copolymers containing hole transporting N-（4-methoxyphenyl）-N-（4-vinylphenyl）naphthalen-1-amine（4MeONPA） and electron transporting 2-phenyl-5-（4-vinylphenyl）-1,3,4-oxadiazole（OXA）at different compositions was applied for heterojunction and homojunction OLEDs. For heterojunction devices employed the copolymers as the hole transporting layer and Alq3as the electron transporting and emitting layer,a maximum luminance and current efficiency of over 23000 cd/m2and 4.2 cd/A（PL of Alq3）, respectively, were achieved at the charge balance composition. Homojunction devices for the copolymers were demonstrated by the addition of rubrene as a dopant. The single layer devices at the optimal copolymer composition has ca 1500 cd/m2and 0.74 cd/A.

关键词： homojunction devices charge balance bipolar small molecules conductive vinyl copolymers

Review of advanced CMOS technology for post-Moore era

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2012年第12期55卷 2316-2325页

作者： LI ming Institute of Microelectronics Peking UniversityBeijing 100871China

The continuous downsizing of device has sustained Moore's law in the past 40 *** the power dissipation becomes more and more serious,a lot of emerging technologies have been adopted in the past decade to solve the short channel effect,leakage and performance degradation *** this paper,the emerging scaling technologies and device innovations,including high-k/metal gate,strain,ultra-shallow junction,tri-gate FinFET,extremely thin SOI and silicon nanowire FET will be reviewed and discussed in terms of the potential and challenge for post-Moore era.

关键词： Moore's law power dissipation performance gain variability HK/MG strain novel device architecture

维普期刊数据库

Eight Relationships That Should Be Correctly Handled in Working out Administrative Procedural law

在线全文

学校读者我要写书评

暂无评论

Social Sciences in China 2005年第4期 161-162页

作者： Jiang ming’an, Professor, the School of law, Beijing University Xiao Yun