检索结果-南通市图书馆

Journal of Sustainable Bioenergy Systems 2019年第4期9卷 169-178页

作者： jung-In Park Hyunjin Kim Dae Kyung Go Peter S. Park Sang Heon Lee min jung koh Jonathan Jo Donghoon Lee Seungshin Lee Paul S. Chung Fuzbien Technology Institute Rockville MD USA Youth with Talents Fairfax VA USA St. Johnsbuury Academy Jeju Korea Department of Biology School of Arts and Sciences Cornell University Ithaca NY USA School of Arts and Sciences Johns Hopkins Baltimore MD USA

The current study reports the evidence of enhancement in power generation from cellulosic biomass in microbial fuel cell (MFC) systems by supplementing dried Doraji (Platycodon grandiflorum) roots powder. Mediator-less two chamber H-type MFCs were prepared using rumen fluid as anode inocula to convert finely ground pine tree (Avicel) at 2% (w/v) to electricity. Dried Doraji roots were ground to pass 1 mm sieve and added to the anode of MFC at 0.1% w/v dosage for treatment. MFC power and current across an external resistor were measured daily for 10 d. At the end of incubation on d10, collected gases were measured for total gas volume and analyzed for gas composition on gas chromatography. Supplementation of Doraji roots powder to MFC anode chamber increased power generation and CO2 production. Over the 10d experimental period, power density normalized to anode surface area were between 17.0 and 37.7 with average of 32.5 mW/m2 in Doraji MFCs, and between 16.8 and 19.8 with average of 18.2 mW/m2 in control group. CO2 production increased and methane to CO2 ratio decreased in Doraji root treatment comparing to control group. These observations imply that Doraji root components would inhibit methanogenesis and alter microbial fermentation of cellulose compounds favorable to produce bioenergy efficiently in MFC.

关键词： MFC Platycodon grandiflorum

Patterns of Pediatric Malaria Incidence and Outcomes in Kasungu, Malawi in 2016

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Infectious Diseases 2019年第4期9卷 277-284页

作者： Byungchan Kim Sohyun Chang min Jae Shin Prescott Hong George Lee min jung koh Immanuel H. Anaborne Donghoon Lee Paul S. Chung George Talama Thomas Nyirenda Department of Radiology Washington University St. Louis MO USA Department of Art & Science Biology Johns Hopkins University Baltimore MD USA Youth with Talents Fairfax VA USA Kasungu District Hospital Kasungu District Malawi Clinical Research Education and Management Service Lilongwe Malawi

Malawi is resource poor country in Africa with one of the highest infant and child mortality rates in the world. Malaria is one of the major causes of morbidity and mortality among children in Malawi. Studies have shown barriers to care of sick children and the formal health sector has shown sub-optimal patient assessments and overreliance on antibiotic treatment of a child with fever. In 2017, a team of students from Korea and USA audited clinic registers of six health centres under the hospital’s administration of Kasungu District in Malawi for the year of 2016. The clinics were included in the study were those that contributed to the largest number of patients in the district annually. The aim of the audit was to examine treatment outcomes of all children presenting with fever and on whom a definitive diagnosis or presumptive diagnosis of malaria was made at the 6 chosen clinics in Kasungu for improvement of health information system for the district health office. The number of children with malaria ranged between 80 and 440 per month, with the peak occurring between the rainy months of February to May. Peak mortality rate occurred in September and November at 21%. Patients presented with multiple symptoms of fever, convulsion, pallor, vomiting, cough, diarrhea, abdominal pain and headache. Average mortality rate differed between traditional authorities, ranging from 4% to 15%. Off-season high mortality finding promotes more studies looking into socioeconomic and hospital support. Multiple symptoms among patients treated for malaria is a common finding emphasizing the need to integrate household practices for malaria prevention, good malaria case management and linkage with community care of childhood illness (CCM) programs at the clinics in the district.

关键词： Case Management Childhood Fever Kasungu Malawi Mortality Pediatric Malaria

Sexually Transmitted Diseases at Monkey Bay Community Hospital in Mangochi, Malawi;an Analysis of Characteristics of Common Sexually Transmitted Diseases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Infectious Diseases 2020年第4期10卷 243-252页

作者： David S. Chung min jung koh Sung Hwan Chough Seog In Moon Gene K. Lee Ivy Kim Yujin Kim Jae Hee Kim Lorie Kim Hyunjin Kim Eunice Kang Fatsani Manase Thomas Nyirenda School of Medicine University of Virginia Charlottesville VA USA Youth with Talents Fairfax VA USA School of Medicine Georgetwon University Washington DC USA College of Dentistry NYU New York NY USA Clinical Research Education and Management Service Lilongwe Malawi

We present the characteristics of the commonly diagnosed sexually transmitted infections (STI) at a clinic of Monkey Bay community hospital by a retrospective study. We conducted an audit of patients’ hospital records from a STIs clinic at Monkey Bay community hospital in Mangochi District (Malawi) covering a period from January 2019 to June 2019 (18 months). Data was tabulated in excel and analyses were made based on sex, age, male circumcision status, pregnancy and the pattern of STIs diagnosed within the chosen study period. A total number of 659 clients presented at STI clinic of Monkey Bay community hospital between January 2018 and June 2019. Out these clients, 409 (62%) were females and 250 (38%) were males. Most of the patients were in the age range of 25 years or above (447, 68%). Majority of the patients were HIV negative (523, 79%). Out of the 250 males, 113 (45%) were circumcised. Among female patients 56 of the 409 (14%) were pregnant. The most common presentations for all cases put together were lower abdominal pain (253, 38%), then urethral discharge (189, 29%), abnormal vaginal discharge (141, 21%), genital ulcer disease (64, 10%), in that order. Syphilis, genital warts, inguinal bubo and scrotal swelling were less common. The most common presentation in males was urethral discharge (178, 71%), while in females it was lower abdominal pain (214, 52%). Our audit showed that in Mangochi (Malawi) sexually transmitted diseases of various types are more common among young adults, females and uncircumcised men. There was no much difference in the percentage of STI’s between HIV positive and HIV negative people. These results point to an alarmingly high level of risky sexual behaviors among sexually active age groups in this part of Malawi, a country which still has one of the highest HIV prevalence in sub-Saharan Africa. This calls for continued and better research and control for transmission of STIs in the district.

关键词： Sexually Transmitted Infections (STIs) Mangochi Malawi

Tolerating Permanent State Transition Faults in Asynchronous Sequential Machines

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 Computer Science & Technology 2016年第5期31卷 1028-1037页

作者： jung-min Yang School of Electronics Engineering Kyungpook National University Daegu 41566 Korea

Corrective control theory lays a novel foundation for the fault-tolerant control of asynchronous sequential machines. In this paper, we present a corrective control scheme for tolerating permanent state transition faults in the dynamics of asynchronous sequential machines. By a fault occurrence, the asynchronous machine may be stuck at a faulty state, not responding to the external input. We analyze the detectability of the considered faults and present the necessary and sufficient condition for the existence of a controller that overcomes any permanent transition faults. Fault tolerance is realized by using potential reachability and asynchronous mechanisms in the machine. A case study on an asynchronous counter is provided to illustrate the proposed fault detection and tolerance scheme.

关键词： asynchronous sequential machine corrective control permanent fault fault tolerance

Characteristics of pupillo-accommodative functions according to time of onset,gender and age in tonic pupil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2013年第5期6卷 659-661页

作者： Kyung-min koh Ungsoo Samuel Kim Department of Ophthalmology Kim's Eye Hospital Department of Ophthalmology Konyang University College of Medicine

AIMTo evaluate the characteristics of pupillo-accommodative functions in patients with idiopathic tonic pupil according to the time of onset, gender, and age.

关键词： tonic pupil accommodation cholinergic supersensitivity

Densification simulation of compacted Al powders using multi-particle finite element method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第B9期19卷 68-75页

作者： Kyung-Hun LEE jung-min LEE Byung-min KIM School of Mechanical Engineering Pu san National University

The powder compaction simulations were performed to demonstrate deformation behavior of particles and estimate the effect of different punch speeds and particle diameters on the relative density of powder by a multi-particle finite element model(MPFEM). Individual particle discretized with a finite element mesh allows for a full description of the contact mechanics. In order to verify the reliability of compaction simulation by MPFEM, the compaction tests of porous aluminum with average particle size of 20 μm and 3 μm were performed at different ram speeds of 5, 15, 30 and 60 mm/min by MTS servo-hydraulic tester. The results show that the slow ram speed is of great advantage for powder densification in low compaction force due to sufficient particle rearrangement and compaction force increases with decrease in average particle size of aluminum.

关键词：粉末压实粉末粒子多孔铝有限元法模拟致密化平均粒径有限元模型

Optimal Checkpoint Placement on Real-Time Tasks with Harmonic Periods

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2012年第1期27卷 105-112页

作者： Seong Woo Kwak jung-min Yang Department of Electronic Engineering Keimyung University Department of Electrical Engineering Catholic University of Daegu

This paper presents an optimal checkpoint strategy for fault-tolerance in real-time systems where transient faults occur in Poisson distribution. In our environment, multiple real-time tasks with different deadlines and harmonic periods are scheduled in the system by rate-monotonic algorithm, and checkpoints are inserted at a constant interval in each task. When a fault is detected, the system carries out rollback to the latest checkpoint and re-executes tasks. The maximum number of re-executable checkpoints and an equation to check schedulability are derived, and the optimal number of checkpoints is selected to maximize the probability of completing all the tasks within their deadlines.

关键词： checkpoint scheme real-time system fault-tolerance harmonic period rate-monotonic (RM) scheduling

Global warming related carbon dioxide abatement proposals

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 1993年第3期5卷 269-278页

作者： jung Sik koh UN ESCAP Bangkok 10200 Thailand

The relationship between man-made CO2 emission and atmospheric CO2 concentration has been established. The factors that affect CO2 reduction allotment and the impacts on future energy demand and supply were discussed, in order to help energy policy makers both in developed countries and in developing countries for understanding the fundamental constraint on energy sector resulted from global warming related CO2 reduction, and hopefully in finding a common objective starting point to deal with global warming negotiation in energy sector, and to investigate the optimum stabilization goal and process acceptable to all sovereign countries that based on equity and applicability.

关键词： global wanning carbon dioxide abatement optimum CO2 stabilization.

CoolVox:Advanced 3D convolutional neural network models for predicting solar radiation on building facades

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2022年第5期15卷 755-768页

作者： jung min Han Eun Seuk Choi Ali Malkawi Harvard University Graduate School of Design CambridgeUSA Harvard Center for Green Buildings and Cities CambridgeUSA Harvard John A.Paulson School of Engineering and Applied Sciences CambridgeUSA

Data-driven models have become increasingly prominent in the building,architecture,and construction *** area ideally suited to exploit this powerful new technology is building performance ***-based models have traditionally been used to estimate the energy flow,air movement,and heat balance of ***,physics-based models require many assumptions,significant computational power,and a considerable amount of time to output *** neural networks(ANNs)with prefabricated or simulated data are likely to be a more feasible option for environmental analysis conducted by designers during the early design *** ANNs require fewer inputs and shorter computation times and offer superior performance and potential for data augmentation,they have received increased attention for predicting the surface solar radiation on ***,ANNs can provide innovative and quick design solutions,enabling designers to receive instantaneous feedback on the effects of a proposed change to a building's *** research introduces deep learning methods as a means of simulating the annual radiation intensities and exposure level of buildings without the need for physics-based *** propose the CoolVox model to demonstrate the feasibility of using 3D convolutional neural networks to predict the surface radiation on building *** CoolVox model accurately predicted the radiation intensities of building facades under different boundary conditions and performed better than ARINet(with average mean square errors of 0.01 and 0.036,respectively)in predicting the radiation intensity both with(validation error=0.0165)and without(validation error=0.0066)the presence of boundary buildings.

关键词： artificial neural networks 3D convolutional neural networks solar radiation simulation building performance simulation

Genome-Wide Identification and Functional Analysis of Genes Expressed Ubiquitously in Rice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2015年第2期8卷 276-289页

作者： Ki-Hong jung Sung-Ruyl Kim Hoi-Khoanh Giong minh Xuan Nguyen Hyun-jung koh Gynheung An Department of Plant Molecular Systems Biotechnology & Crop Biotech Institute Kyung Hee University Yongin 446-701 Korea Graduate School of Biotechnology Kyung Hee University Yongin 446-701 Korea These authors contributed equally to the article.

Genes that are expressed ubiquitously throughout all developmental stages are thought to be necessary for basic biological or cellular functions. Therefore, determining their biological roles is a great challenge. We identified 4034 of these genes in rice after studying the results of Agilent 44K and Affymetrix meta- anatomical expression profiles. Among 105 genes that were characterized by loss-of-function analysis, 79 were classified as members of gene families, the majority of which were predominantly expressed. Using T-DNA insertional mutants, we examined 43 genes and found that loss of expression of six genes caused developing seedor seedling-defective phenotypes. Of these, three are singletons without similar family members and defective phenotypes are expected from mutations. Phylogenomic analyses integrating genome-wide transcriptome data revealed the functional dominance of three ubiquitously expressed fam- ily genes. Among them, we investigated the function of OsO3g19890, which is involved in ATP generation within the mitochondria during endosperm development. We also created and evaluated functional net- works associated with this gene to understand the molecular mechanism. Our study provides a useful strategy for pheonome analysis of ubiquitously expressed genes in rice.

关键词： functional redundancy phylogenomic analysis rice systematic phenotype screening ubiquitouslyexpressed genes