检索结果-南通市图书馆

在肯尼亚生活废水生物处理系统中凤眼莲（Eicchornia crassipes）生物质可持续利用研究

在线全文

学校读者我要写书评

暂无评论

在肯尼亚生活废水生物处理系统中凤眼莲（Eicchornia crassipes）...

作者： ONYANGO janet ATIENO 中国科学院大学(中国科学院武汉植物园)

学位级别：硕士

工业和人口增长加剧的能源需求不断增加,对通常使用的燃料资源造成压力,从而引发替代能源的开发和利用。已证明致密化技术通过生物质团块的生产而有效地产生能量。煤球用于家庭供暖和照明,也用于工业锅炉,熔炉和窑炉。用于生产煤饼的材... 详细信息

工业和人口增长加剧的能源需求不断增加,对通常使用的燃料资源造成压力,从而引发替代能源的开发和利用。已证明致密化技术通过生物质团块的生产而有效地产生能量。煤球用于家庭供暖和照明,也用于工业锅炉,熔炉和窑炉。用于生产煤饼的材料包括锯屑,木炭粉,废纸,椰子壳,花生壳,稻壳,咖啡壳等。肯尼亚的生产公司广泛使用木炭粉作为生产煤球的主要原料,并在全国范围内受到广泛关注。木炭粉尘的可用性取决于木炭生产的树木的可用性,但木炭粉尘作为生产煤球的原料具有不可持续性。马赛马拉大学建成的生物废水处理系统使用水葫芦作为生物净化物种,大大降低了废水中的养分含量。然后将处理过的废水用于苗圃灌溉。为了可持续利用废水处理系统生产的水葫芦生物质,本研究探讨了水葫芦与其他粘合剂混合生产高效煤球的用途将收获的凤眼莲切碎并晒干以达到约8.5%的水分含量,然后机械压碎并筛分以获得p<5mm的粒度。实验中以桉树叶、蜂蜜和浮游藻类为原料制备三种粘合剂,并分别以30%,20%和10%的粘合剂比例混合到凤眼莲粉末中。将它们放入压块机中并成型。然后分析压块的密度,形态持久性,耐水性和热值以评估压块特性。结果表明粘合剂类型对压缩密度没有影响,但随着粘合剂比例的增加,密度增加。松弛率范围为1.08-1.33,这表明凤眼莲与粘合剂结合后,可以有效地制造团块。松弛率也随着粘合剂比例的增加而降低,表明堆积密度和颗粒粘合增加。压块具有45%的中度耐水性,表明对水具有很大的亲和力,因此不适合在潮湿的地区使用。使用桉树叶粘合剂后的形态持久性指数最低,但也随着粘合剂比例的增加而增大,这表明粘合剂有利于生物质颗粒粘合。与木炭和其他压块相比,凤眼莲压块中的能量均显示出预期的结果,含20%的蜜糖粘合剂与20%的浮游植物粘合剂的凤眼莲压块热值分别为1148.35 kj/kg和998.37kj/kg。由于桉树叶中含有高度易燃的桉树油,所以20%桉树叶粘合剂的压块也能产生1090.43kj/kg的高热值。研究表明,凤眼莲与生物质粘合剂混合可制成对环境的危害较小,燃烧时间较长,热值较高的生物质燃料块,可持续性利用了生活废水处理中产生的有机物。该研究将进一步开发用于生物质燃料生产的其他植物材料,如具有高木质素含量的废纸利用,以及增加改良材料如红土以增加凤眼莲压块的密度。

关键词：凤眼莲生活废水处理粘合剂燃料压块

Assessment of HIV/AIDS Stigma in a Rural Namibian Community

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

World Journal of AIDS 2015年第3期5卷 199-207页

作者： Penehafo Angula Busisiwe Purity Ncama janet Frohlich University of Namibia Windhoek Namibia

Namibia has been affected by the Human Immunodeficiency Virus (HIV) and Acquired Immune Deficiency Syndrome (AIDS) pandemic with infected and affected persons experiencing stigma at different levels. Despite the high level of knowledge?on HIV/AIDS, stigma remains a challenge. It was for this reason that this paper describes and measures the level of HIV/AIDS stigma in a rural community in Namibia. Mixed methods were used to collect data from 224 participants consisting of 93 people living with HIV/AIDS (PLWHA) who were recruited voluntarily from their support groups, 77 family members nominated by PLWHA participants, 31 community members who were recruited through simple random sampling and 19 opinion leaders who were purposefully selected and four health care workers from an Antiretroviral clinic who were available at the time of this study. Three measurement instruments namely HIV/AIDS Stigma Instrument-PLWHA (HASI-P), Family & Community Stigma Instrument (F&C-SI) and HIV/AIDS Stigma Instrument-Nurse (HASI- N) were used. In-depth interviews were conducted to complement the quantitative results. The study found that stigma manifests in different ways and results revealed that verbal abuse (55%, n = 50, PLWHA), social isolation (73%, n = 67), negative self-perception (33%, n = 30), and household stigma (26% n = 19, family members) were the most common form of stigma experienced by PLWHA. Furthermore health care workers reported stigma of association (50%, n = 2) as care providers for people living with HIV/AIDS. The study concluded that stigma exists although some scores such as fear of contagion and workplace stigma were low. Therefore, interventions in knowledge on basic facts of HIV transmission need to be strengthened. Nonetheless the majority of participants confirmed their willingness to care for sick relatives with HIV and AIDS. This study did not explore stigma of association against caregivers with other participants other than the four health care workers

关键词： People Living with HIV/AIDS (PLWHA) Family & Community Stigma Instrument Ongenga Constituency Namibia

Evaluation of NORM and Dose Assessment in an Aluminium Industry in Nigeria

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 Nuclear Science and Technology 2013年第4期3卷 150-154页

作者： janet Ayobami Ademola Michael Adekunle Olatunji Department of Physics University of Ibadan Ibadan Nigeria

The activity concentrations of natural radionuclides 226Ra, 232Th and 40K in bauxite ore, alumina, dross tailing, aluminium scraps and soil samples collected from an aluminium industry in Nigeria were determined by gamma ray spectroscopy method. The mean values of 226Ra, 232Th and 40K content of the samples ranged from 16 ± 6 (alumina) to 31 ± 10 (scrap), 41 ± 0.12 (scrap) to 134 ± 21(bauxite) and 47 ± 14 (bauxite) to 354 ± 8 (scrap) Bq·kg-1, respectively. The mean activity concentrations of 226Ra and 40K in all the samples are lower than the world average for soil while 232Th is higher with the exception of alumina and scrap. As a measure of radiation hazard to the occupational workers and the members of the public, the radium equivalent activities and external gamma dose rates due to the radionuclides at 1 m above ground surface were calculated. The radium equivalent activities which varied between 88 ± 10 (alumina) and 222 ± 34 (bauxite) Bq·kg-1 are within the safety recommended limit of 370 Bq·kg-1. The mean annual effective doses calculated from the absorbed dose rates in air were between 54 ± 6 (alumina) and 134 ± 20 (bauxite) μSv·y-1, which is lower than the 1 mSv·y-1 recommended for the general public. The annual gonadal dose equivalent of all the samples with the exception of alumina was higher than the world average for soil.

关键词： NORM Gamma Radiation Dose Radiation Hazards Aluminium

崎岖地形动植物栖息地生态环境遥感制图与应用

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地球信息科学 2008年第4期10卷 527-532页

作者：黄文声 janet Nichol 香港理工大学土地测量及地理资讯学系

传统制图方法周期长、成本较高,影响了大面积精细动植物栖息地生态环境制图的生产。鉴此,本文采用IKONOS(VHR)图像对香港郊野公园崎岖地形的动植物栖息地生态环境制图进行了研究。由于香港植被的多样性,而且观察的动植物相互作用出现于... 详细信息

传统制图方法周期长、成本较高,影响了大面积精细动植物栖息地生态环境制图的生产。鉴此,本文采用IKONOS(VHR)图像对香港郊野公园崎岖地形的动植物栖息地生态环境制图进行了研究。由于香港植被的多样性,而且观察的动植物相互作用出现于结构的层面,所以对动植物栖息地的分类应以结构为基础而非以植物为基础。本文利用图像处理技术,运用决策树之多层次地物导向分割分类(MOOSC)方法绘制九种动植物栖息地类型图。MOOSC方法和其他现有的几种分类方法相比,其分类精度高、成本低。

关键词：动植物栖息地生态环境制图 IKONOS 结构分类图像分割

在线全文

学校读者我要写书评

暂无评论

花木兰

Detection of Borrelia americana in the Avian Coastal Tick, Ixodes auritulus (Acari: Ixodidae), Collected from a Bird Captured in Canada

丛书名：书虫·牛津英汉双语读物

2010年

作者： (英)janet Hardy-Gould

古时候，在我国北方边境住着一户姓花的人家。花老汉夫妻膝下有个女儿，名叫花木兰……

ISBN: (纸本)9787560096858

古时候，在我国北方边境住着一户姓花的人家。花老汉夫妻膝下有个女儿，名叫花木兰……

关键词：漫画

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Open Journal of Animal Sciences 2016年第3期6卷 207-216页

作者： John D. Scott janet E. Foley Research Division Lyme Ontario Fergus Canada Department of Medicine and Epidemiology School of Veterinary Medicine University of California Davis CA USA

We document the first record of Borrelia americana in Canada. This Borrelia was detected in an avian coast tick, Ixodes auritulus (Acari: Ixodidae), collected from a Varied Thrush, Ixoreus naevius, along coastal British Columbia. Using real-time PCR and DNA sequencing of the flagellin gene, we determined that the borrelial amplicon from the I. auritulus nymph was 99% homologous with B. americana type strain SCW-41. Because patients infected with B. americana can be seronegative for Lyme disease, medical professionals should be willing to pursue molecular analyses and consider treatment for patients with Lyme disease-like symptoms.

关键词： Borrelia americana Lyme Disease Avian Coastal Tick Ixodes auritulus Varied Thrush Songbird Bird Parasitism Canada

Outcomes of Medicare beneficiaries hospitalised with transient ischaemic attack and stratification using the ABCD^(2) score

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Stroke & Vascular Neurology 2021年第2期6卷 314-318页

作者： Shreyansh Shah Li Liang Durgesh Bhandary Saga Johansson Eric E Smith Deepak L Bhatt Gregg C Fonarow Naeem D Khan Eric Peterson janet Prvu Bettger Department of Neurology Duke University School of MedicineDurhamNorth CarolinaUSA Duke Clinical Research Institute DurhamNorth CarolinaUSA AstraZeneca UK Ltd CambridgeUK Hotchkiss Brain Institute and Department of Clinical Neurosciences University of CalgaryCalgaryAlbertaCanada Division of Cardiology Brigham and Women's HospitalBostonMassachusettsUSA Division of Cardiology Ronald Reagan UCLA Medical CenterLos AngelesCaliforniaUSA

Background Long-term outcomes for Medicare beneficiaries hospitalised with transient ischaemic attack(TIA)and role of ABCD^(2) score in identifying high-risk individuals are not *** We identified 40825 Medicare beneficiaries hospitalised from 2011 to 2014 for a TIA to a Get With The Guidelines(GWTG)-Stroke hospital and classified them using ABCD^(2)s of mortality and rehospitalisation(all-cause,ischaemic stroke,haemorrhagic stroke,myocardial infarction,and gastrointestinal and intracranial haemorrhage)for high-risk versus low-risk groups adjusted for patient and hospital *** Of the 40825 patients,35118(86%)were high risk(ABCD^(2)≥4)and 5707(14%)were low risk(ABCD^(2)=0-3).Overall rate of mortality during 1-year follow-up after hospital discharge for the index TIA was 11.7%,44.3% were rehospitalised for any reason and 3.6%were readmitted due to *** with ABCD^(2) score≥4 had higher mortality at 1 year than not(adjusted HR 1.18,95%CI 1.07 to 1.30).Adjusted risks for ischaemic stroke,all-cause readmission and mortality/all-cause readmission at 1 year were also significantly higher for patients with ABCD^(2) score≥4 vs *** contrast,haemorrhagic stroke,myocardial infarction,gastrointestinal bleeding and intracranial haemorrhage risk were not significantly different by ABCD^(2) *** This study validates the use of ABCD^(2) score for long-term risk assessment after TIA in patients aged 65 years and *** efforts for community-based follow-up care after TIA are needed for ongoing prevention in Medicare beneficiaries who were hospitalised for TIA.

关键词： admitted score prevention

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

外国教师评论

外语教学与研究 1992年第2期24卷 16-18页

作者： Iris Maurer janet Beddison Philippa Jeffrey Tianjin Normal University Beijing Normal University

I’ve been very pleased for the opportunity toparticipate in this Conference. I would liketo mention three aspects I appreciate. First, I want to congratulate you for conduct-ing the Conference all in English. Preparingpapers is never easy, and working in a secondlanguage doesn’t make it easier. So I commendall of you for your courage and hard work.

关键词：外国教师评论 please session Presentation debate Reading 外语教学与研究 themselves desirable

在线全文

学校读者我要写书评

暂无评论

希望天使

疯狂英语（初中天地） 2005年第6期 25-26页

作者： janet Boyle 小霞

艾米·雷蒂克来自拉纳克郡的东克尔布莱德。当她只有18个月大的时候，一次意外给她留下了永久的伤疤。就在她妈妈转身的那一小会儿，这个好奇的小家伙摇摇晃晃地溜入厨房，拉了拉热水壶的电线，结果滚烫的开水倾盆而下，洒在她稚嫩的身... 详细信息

艾米·雷蒂克来自拉纳克郡的东克尔布莱德。当她只有18个月大的时候，一次意外给她留下了永久的伤疤。就在她妈妈转身的那一小会儿，这个好奇的小家伙摇摇晃晃地溜入厨房，拉了拉热水壶的电线，结果滚烫的开水倾盆而下，洒在她稚嫩的身体上。

关键词：中学英语双语阅读文学作品