检索结果-南通市图书馆

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

标准Unix操作系统的缺点

计算机科学 1984年第4期 75-76页

作者： paul jackson 孙玉方

Bell 实验室的 Unix 操作系统的复杂结构是一把双刃利剑:虽然它为用户提供了高级的服务,但它的基础软件结构却削弱了它的性能。例如,Unix 的一种有吸引力的功能是它的多任务能力,其中象磁盘输入/输出和通信那样的多个进程可以同时在存... 详细信息

Bell 实验室的 Unix 操作系统的复杂结构是一把双刃利剑:虽然它为用户提供了高级的服务,但它的基础软件结构却削弱了它的性能。例如,Unix 的一种有吸引力的功能是它的多任务能力,其中象磁盘输入/输出和通信那样的多个进程可以同时在存储器中并分享处理机。只要个别任务不要求大量的存储器,那么这种能力就是一种优点。然而,标准的 Unix 是一个对换系统,这就意味着它必须把用户进程的一部份移到磁盘上,因为它超出了主存的容量,然后再把

关键词： Unix 内存磁盘计算机外围设备目录项进程文件系统操作系统计算机系统

Unix的变种为多处理机系统的管理开辟了一条途径

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

计算机科学 1984年第4期 68-74页

作者： paul jackson 刘日升

CPU 间的消息协调各个处理机;分离的文件管理加速应用处理。从Bell实验室精心制作的Unix操作系统得到好处的一个突出例子是MegaFranme系统,它克服了若干有损性能的几道难关。

关键词：应用处理机内核地址文件系统 ICC 终端处理机操作系统 Unix 系统总线计算机管理处理机管理请求队列字节磁盘机磁盘驱动器

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

培训师的灵感即兴发挥的艺术 1

Elemental Analysis of Fly and Bottom Ash from Burners/Incinerators in Selected Health Care Facilities in Kiambu County, Kenya

丛书名：派力营销思想库

2004年

作者：保罗·Z.杰克逊（paul Z jackson）贾洪骏吴敏译

本书对如何设计和传授培训教程并通过教程使受训者产生最好的培训效果，提高作为一个讲演者和一个群体领导的推动者的技巧等，提供了大量的不同类型的培训方法。

ISBN: (纸本)780147774X

关键词：社会科学总论劳动科学职业培训

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Journal of Environmental Science and Engineering(A) 2014年第5期3卷 243-249页

作者： Raphael Kungu paul Njogu jackson Kiptoo Institute for Energy and Environmental Technology Jomo Kenyatta University of Agriculture and Technology Nairobi P.O. Box62000-00200 Kenya Department of Chemistry Jomo Kenyatta University of Agriculture and Technology Nairobi P. O. Box 62000-00200 Kenya

Medical waste incinerators emit a wide range of pollutants like heavy metals, dioxins and furans. These include Pb （lead）, Hg （mercury）, Cd （cadmium）, fine dust particles and PICs （products of incomplete combustion）. The objective was to determine the elemental composition of medical waste residue after incineration in selected hospitals in Kiambu County, Kenya. Bottom/fly ash samples were collected from the burners/incinerators in the selected health care facilities visited. The concentrations of the metals in the fly ash and bottom ash were determined using an XRF （X-ray fluorescence） spectrometer after acid digestion. The concentrations of heavy metals in the fly and bottom ash were as follows： Ti （titanium） 62-839 mg·kg^-1 and a mean of 202 mg·kg^-1 and 344 mg·kg^-1 in fly ash and bottom ash, respectively. Ca （calcium） was 37,753-204,475 ***1 with means of 27,132 ***-1 in fly ash and 131,185 mgg·kg^-1 in bottom ash. Zn （zinc） was 297-6,605 mg·kg^-1 with means （2,307 mg·kg^-1 in fly ash, 4,359 mg·kg^-1 in bottom ash）, Pb （13-1,819 mg·kg^-1） had means of 280 mg·kg^-1 in fly ash and 291 mg-kg-1 in bottom ash. Cu （copper）（9.5-250 mg·kg^-1） had means of 83.47 mg·kg^-1 in fly ash and 98.8 mg·kg^-1 in bottom ash. The wide variations in results can be attributed to the different burners/incinerators used and different segregation methods of the medical waste. The results show that the reported levels of heavy metals could pose a health risk due to possible leaching after disposal.

关键词： Health care waste fly and bottom ash incinerators metal pollutants.

Assessing the spillover effects of *** policy normalization on Nigeria sovereign bond yield

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Financial Innovation 2019年第1期5卷 566-581页

作者： Kpughur Moses Tule Osana jackson Odonye Udoma Johnson Afangideh Godday Uwawunkonye Ebuh Elijah Abasifreke paul Udoh Augustine Ujunwa Monetary Policy Department Central Bank of NigeriaNo 33 Tafawa Balewa WayCentral Business DistrictP.M.B.0187GarkiAbujaNigeria International Monetary Fund Washington DCUSA

This study examines the spillover effects of *** policy normalization on Nigeria 10-Year Treasury bond yield between 2011 and 2017,using the vector error correction model *** results reveal that domestic factors,such as exchange rate and inflation,rather than the U.S.10-Year sovereign bond yield,are the key drivers of Nigeria 10-Year bond ***,the spillover effect from the *** policy was amplified by oil price shocks and changes in Nigeria’s monetary policy *** counterfactual analysis confirms the findings.

关键词： Tapering Nigeria 10-year sovereign bond yield Error correction model Counterfactual analysis

Longitudinal monitoring for the emergence of epidermal growth factor C797S resistance mutations in non-small cell lung cancer using blood-based droplet digital PCR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cancer Drug Resistance 2019年第3期2卷 912-916页

作者： Mark Bowling Hyder Arastu Victoria Edwards Leisa jackson Scott Thurston Jordan Reese Hestia Mellert Gary Pestano paul Walker East Carolina University Mail Stop 628Internal Medicine-Hematology/OncologyGreenvilleNC 27834USA Biodesix Inc.2970 Wilderness PlaceBoulderCO 80301USA.

Validation of assays for the C797S mutation as a biomarker for osimertinib resistance is promising in guiding treatment decision-making for multidrug resistant non-small cell lung cancer. A newly developed droplet digital PCR (ddPCR) assay was used to retrospectively evaluate the emergence of the C797S mutation in six remnant plasma samples in this case report. It was found that the detected emergence of C797S clearly correlated with clinical signs of treatment resistance. Had these data been available to aid treatment selection in real time, there would have been hope for recaptured disease response and control instead of treatment cessation. The results of this study show that highly sensitive ddPCR methods can be used for the monitoring of emergent epidermal growth factor somatic variant mutations in circulation.

关键词： Epidermal growth factor non-small cell lung cancer C797S drug resistance

Levels of Polycyclic Aromatic Hydrocarbons (PAHs) in Healthcare Waste Incinerators’ Bottom Ash from Five County Hospitals in Kenya

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 Environmental Protection 2024年第3期15卷 318-337页

作者： Muriithi jackson Githinji paul Mwangi Njogu Zipporah Nganga Mohamed Karama Institute of Tropical Medicine and Infectious Diseases (ITROMID) Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya Institute of Energy and Environmental Technology Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya Academic Research and Student Affairs South Eastern Kenya University Kitui Kenya Public Health and Epidemiology Umma University Kajiado Kenya

Health-care waste contains potentially harmful microorganisms and compounds which can infect and affect hospital patients, healthcare workers, the general public and environment. Therefore, management of health care waste requires safe handling, treatment and disposal procedures. While incineration reduces the volume and quantity of waste for final disposal, it leads to the production of fly and bottom ashes laden with toxic incomplete combustion products such as Polycyclic Aromatic Hydrocarbons (PAHs), dioxins, furans and heavy metals. This exposes workers who handle and dispose the bottom ashes, hospital patients, the general public and environment. The goal of this study was to determine the total and individual levels of 16 most prevalent and toxic PAHs. Bottom ash samples were collected from incinerators in five county hospitals in Kenya, namely;Moi-Voi, Narok, Kitale, Makindu and Isiolo. Bottom ash samples were collected over a period of six months from the five hospitals. The samples were then sieved, homogenised and stored at 4°C in amber coloured glass containers. The PAHs were extracted using 30 ml of a hexane-acetone solvent (1:1) mixture by ultrasonication at room temperature (23°C) for 45 minutes. The PAHs were then analyzed with a GC-MS spectrophotometer model (Shimadzu GCMS-QP2010 SE) connected to a computer work station was used for the PAHs analysis. The GC-MS was equipped with an SGE BPX5 GC capillary column (30 m × 0.25 mm × 0.25 μm) for the separation of compounds. Helium was used as the carrier gas at a flow rate of 15.5 ml/minute and 14.5 psi. 1 μl of the sample was injected at 280°C, split mode (10:1). The oven programming was set for a total runtime of 40 minutes, which included: 100°C (2-minute hold);10°C /min rise to 200°C;7°C /min rise to 249°C;3°C /min rise to 300°C (2-minute hold). The interface temperature was set at 290°C. Analysis was done in Selected Ion Monitoring (SIM) mode and the peak areas of each of the PAHs were collected from

关键词： PAHs GC-MS Healthcare Wastes Disposal Incinerator Bottom Ash

Development and Application of Integrated Indicators for Assessing Healthcare Waste Management Systems in Kenyan Hospitals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2024年第4期14卷 1080-1120页

作者： Muriithi jackson Githinji paul Mwangi Njogu Zipporah Nganga Mohamed Karama Institute of Tropical Medicine and Infectious Diseases (ITROMID) Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya Institute of Energy and Environmental Technology Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya Academic Research and Student Affairs South Eastern Kenya University Kitui Kenya School of Public Health Amref International University Nairobi Kenya

Healthcare waste management (HCWM) is an important aspect of healthcare delivery globally because of its hazardous and infectious components that have potential for adverse health and environmental impacts. The paper introduces a set of indicators for assessing HCWM systems in hospitals. These indicators are: HCWM policies and standard operating procedures, management and oversight, logistics and budget support, training and occupational health and safety, and treatment, disposal and waste treatment equipment housing. By plotting a mark on a continuum which is defined as good and poor on the extremes and is connected with all other marks in a spoke arrangement, it’s possible to describe a baseline for HCWM in any specific hospital. This baseline can be used to improve awareness of the actors and policy-makers, compare the same hospital at a different point in time, to compare observations by different evaluators and to track improvements. Results suggest that in Kenya, the application of such indicators is useful for evaluating which priorities should be addressed to improve outcomes in HCWM systems. Systematic sampling technique was used to identify and collect data by use of observational checklist, interviews, visual verification and review of documents and a HCWM assessment tool. The objective is to suggest an integrated management tool as a method to identify prevailing problems with a HCWM system. The method can be replicated in other contexts worldwide, with a focus on the developing world. The integrated indicators focus on management of HCW and not its potential impact on human health and environment, an area recognized to be critical for future research.

关键词： Developing Countries HCW Management Indicators Management Tools