检索结果-南通市图书馆

Elevated Stream Pathogenic Indicator Bacteria Concentrations in Livestock Grazing Areas across a Single National Forest

引用

Natural Resources 2017年第10期8卷 657-670页

作者： Lindsey Myers megan fiske megan Layhee Central Sierra Environmental Resource Center Twain Harte CA USA

Livestock presence in proximity to forest streams has been shown to contribute pathogenic bacteria in excess of water quality standards established to protect human health. However, the degree to which livestock fecal contamination in streams on national forest lands is either a limited or a potentially widespread occurrence is still debated. This study provides additional insight into the matter. We analyzed water in small streams near known cattle grazing areas within the Stanislaus National Forest in the Sierra Nevada, California from 2012 to 2016. Fourteen stream sites were sampled before and after cattle were released onto the forest (four of these sites were sampled across multiple years) to compare indicator bacteria concentrations (fecal coliform—FC, Escherichia coli—EC) to standards established for recreational contact for surface waters. One control site was also sampled. There were 194 water quality violations of either state or federal regulatory standards for recreational contact, all of which occurred once cattle were on the forest. Mean (max) FC and EC concentrations were on orders of magnitude higher after cattle were released onto the forest [FC 1307 (30,000) and EC 1033 (17,000) MPN/100 mL] than during the time period before cattle were on the forest [FC 19 (220) and EC 17 (220) MPN/100 mL;FC, F1,210 = 105, p 1,210 = 85.5, p 0.001]. In addition, the presence of cattle, visual evidence of recent cattle-related disturbances, and sampling week were important predictor variables of FC and EC. These findings support the link between cattle presence and increased levels of stream pathogenic bacteria, and also demonstrate that stream pathogenic bacteria pollution occurs widely across the forest. This research indicates the need to consider alternative range management practices to better protect water quality and human health.

关键词： Cattle Escherichia coli Fecal Coliform Sierra Nevada Water Quality

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mapping super-resolution image quality

引用

Light(Science & Applications) 2024年第2期13卷 178-180页

作者： megan A.Steves Ke Xu Department of Chemistry University of CaliforniaBerkeleyCA94720USA

The local quality of super-resolution microscopy images can be assessed and mapped by rolling Fourier ring correlation,even when image quality varies within a single image.

关键词： image resolution Mapping

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent advances and future therapy development for Alzheimer’s disease and related disorders

引用

Neural Regeneration Research 2024年第9期19卷 1877-1878页

作者： megan Hong Gal Bitan Department of Neurology David Geffen School of MedicineUniversity of California Los AngelesLos AngelesCAUSA Department of Chemistry and Biochemistry University of California Los AngelesLos AngelesCAUSA Molecular Biology Institute University of California Los AngelesLos AngelesCAUSA Brain Research Institute University of CaliforniaLos AngelesCAUSA

Over 55 million people globally live with Alzheimer’s disease(AD)or related dementias(ADRD)and the number is expected to double every twenty *** i l recent l y,onl y symptomatic treatments were available to patients with AD,including acetylcholine esterase inhibitors,of which the last one,galantamine,was approved by the US Food and Drug Administration(FDA)in 2001.

关键词： Alzheimer globally patients

来源：

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

Restimate:Recovery Estimation Tool for Resilience Planning

引用

Journal of Safety Science and Resilience 2024年第1期5卷 47-63页

作者： Scott Miles megan Ly Nick Terry Youngjun Choe Department of Human Centered Design&Engineering Campus Box 352315University of WashingtonSeattleWA 98195United States of America Department of Industrial&Systems Engineering Box 352650University of WashingtonSeattleWA 98195United States of America

The *** Institute of Standards and Technology(NIST)published the Community Resilience Planning Guide in *** NIST Guide advocates for a participatory process for developing a performance measurement framework for the jurisdiction’s resilience against a scenario *** framework centers around tables of expected and desired recovery times for selected community assets,such as electricity,water,and natural gas *** NIST Guide does not provide a method for estimating the expected recovery ***,building high-fidelity computer models for such estimations requires substantial resources that even larger ju-risdictions cannot *** most promising approach to recovery time estimation is to systematically use data elicited from people to tap into the wisdom of the(knowledgeable)*** paper describes a novel research-through-design project to enable the computer-supported elicitation of recovery time series *** work is the first in the literature to examine people’s ability to estimate recovery curves and how design in-fluences such *** main contribution to resilience planning is three-fold:development of a new elicitation tool called Restimate,understanding its potential user base,and providing insights into how it can facilitate resilience *** is the first tool to enable evidence-based expert elicitation in any community with limited resources for resilience *** resilience planning,those who facilitate high-stakes planning activities under large uncertainties(e.g.,mission-critical system design and planning)will benefit from a similar research-through-design process.

关键词： expert elicitation disaster natural hazard infrastructure community resilience restoration user-centered design computer-supported cooperative work

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Approach to traumatic cardiac arrest in the emergency department: a narrative literature review for emergency providers

引用

World Journal of Emergency Medicine 2024年第1期15卷 3-9页

作者： Rashed Alremeithi Quincy K.Tran megan T.Quintana Soroush Shahamatdar Ali Pourmand Department of Emergency Medicine George Washington University School of Medicine and Health SciencesWashington DC 20037USA Department of Emergency Medicine University of Maryland School of MedicineBaltimore 21201USA Program in Trauma the R Adams Cowley Shock Trauma CenterUniversity of Maryland School of MedicineBaltimore 21201USA Center for Trauma and Critical Care Department of Surgerythe George Washington University School of Medicine&Health SciencesWashington DC 20037USA

BACKGROUND:Traumatic cardiac arrest(TCA)is a major contributor to mortality and morbidity in all age groups and poses a significant burden on the healthcare *** there have been advances in treatment modalities,survival rates for TCA patients remain *** narrative literature review critically examines the indications and eff ectiveness of current therapeutic approaches in treating ***:We performed a literature search in the PubMed and Scopus databases for studies published before December 31,*** search was refi ned by combining search terms,examining relevant study references,and restricting publications to the English *** the search,943 articles were retrieved,and two independent reviewers conducted a screening ***:A review of various studies on pre-and intra-arrest prognostic factors showed that survival rates were higher when patients had an initial shockable *** were conflicting results regarding other prognostic factors,such as witnessed arrest,bystander cardiopulmonary resuscitation(CPR),and the use of prehospital or in-hospital *** thoracotomy was found to result in more favorable outcomes in cases of penetrating trauma than in those with blunt *** endovascular balloon occlusion of the aorta(REBOA)provides an advantage to emergency thoracotomy in terms of occupational safety for the operator as an alternative in managing hemorrhagic *** implemented in the setting of aortic occlusion,emergency thoracotomy and REBOA resulted in comparable mortality ***-venous extracorporeal life support(V-V ECLS)and veno-arterial extracorporeal life support(V-A ECLS)are viable options for treating respiratory failure and cardiogenic shock,*** the context of traumatic injuries,V-V ECLS has been associated with higher rates of survival to discharge than V-A ***:TCA remains a signifi cant challenge for emergency medical services due to its high m

关键词： Traumatic cardiac arrest Emergency thoracotomy Resuscitative endovascular balloon occlusion of the aorta

来源：

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

Wildfire severity alters soil microbial exoenzyme production and fungal abundances in the southern Appalachian Mountains

引用

Pedosphere 2024年第5期34卷 865-878页

作者： megan L.SCHILL Richard BAIRD Shawn P.BROWN Allison M.VEACH Department of Integrative Biology University of Texas at San Antonio Biochemistry Molecular Biology Entomology and Plant Pathology Department Mississippi State University Department of Biological Sciences The University of Memphis

Climate change has increased drought frequency and duration that are exacerbated by increased temperatures globally. This effect has, and will continue,to increase fire occurrence across many regions of North America. In the southern Appalachian Mountains, wildfires with high burn severity occurred in 2016due to increased drought and human activity. To investigate the effects of burn severity on soil physicochemical properties, microbial extracellular enzyme production, and microbial abundances in a temperate region, surface soils (0–15 cm) were collected from two sites (the Great Smoky Mountains National Park in Tennessee and the Nantahala National Forest in North Carolina, USA) spanning lightly, moderately, and severely burned areas, accompanied by adjacent unburned locations that act as controls. The soil samples were collected at three time points between 2017 and 2019 (i.e., 0.5, 1, and 2.5 years post-fire)among burn severity plots. Total hydrolytic enzyme production varied over time, with severe burn plots having significantly lower enzyme production at 2.5years post-fire. Individual enzymes varied among burn severities and across time post-fire. Light burn plots showed greater carbon-specific (β-glucosidase and β-xylosidase) and phosphorus-specific (acid phosphatase) enzyme activities at 0.5 years post-fire, but this effect was transient. At 2.5 years post-fire, theβ-xylosidase and acid phosphatase activities were lower in severe or moderate burn plots relative to the controls. In contrast, the activity of nitrogen-specific enzyme leucyl aminopeptidase was the lowest in severe burn plots at 0.5 years post-fire, but was the lowest in light burn plots at 2.5 years post-fire. The fungi:bacteria ratio declined with burn severity, indicating that fungi are sensitive or less resilient to high burn severity during recovery. These results suggest that wildfires alter trajectories for soil microbial structure and function within a 2.5-year timeframe, which potentially

关键词： 16S rRNA burn severity extracellular enzyme fungi:bacteria ratio internal transcribed spacer microbial structure

来源：

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

Gastroesophageal signet ring cell carcinoma morbidity and mortality: A retrospective review

引用

World Journal of Gastrointestinal Surgery 2024年第6期16卷 1629-1636页

作者： megan Grinlinton Chris Furkert Andrew Maurice Neville Angelo Michael Booth Department of General Surgery North Shore HospitalAuckland 0620New Zealand Department of Pathology North Shore HospitalAuckland 0620New Zealand

BACKGROUND Upper gastrointestinal(GI)signet ring cell carcinomas(SRCC)confer a poor *** benefit of operative intervention for this patient group is contro-versial in terms of overall *** To investigate factors relating to survival in patients with upper GI *** A retrospective,tertiary,single-centre review of patients who were diagnosed with oesophageal,gastroesophageal junction and gastric SRCC was *** primary outcome was to compare mortality of patients who underwent operative management with those who had nonoperative ***-dary outcomes included assessing the relationship between demographic and histopathological factors,and *** One hundred and thirty-one patients were *** one-year survival for the operative group was 81%and for the nonoperative group was 19.1%.The five-year survival in the operative group was 28.6%vs 1.5%in the nonoperative *** difference in overall survival between groups was statistically significant(HR 0.19,95%CI(0.13-0.30),P<0.001).There was no difference in survival when ad-justing for age,smoking status or *** multivariate analysis,patients who underwent surgical management,those with a lower stage of disease,and those with a lower Charlson Comorbidity Index(CCI)had significantly improved *** Well-selected patients with upper GI SRCC appear to have reasonable medium-term survival following *** surgery to a carefully selected patient group may improve the outcome for this disease.

关键词： Signet ring cell carcinoma Gastric cancer Oesophageal cancer Poorly cohesive gastric cancer Diffuse gastric cancer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Review: Biosensor Progression in Glucose Monitoring for Patients with Diabetes

引用

Advances in Bioscience and Biotechnology 2024年第8期15卷 503-510页

作者： megan Sweeney Electrical Engineering Department at the University of Massachusetts Lowell Lowell MA USA

Diabetes is a condition that can come to the surface at any point throughout a person’s life. Although Type 1 and Type 2 Diabetes have different triggers that cause them to arise, a person can experience similar complications from either if not monitored and treated accordingly. Through the Diabetes Control and Complications Trial, it was found that a significant way to monitor diabetes is through glucose levels in a person’s body. The research surrounding glucose monitoring dates to the mid-1800s, with the first successful reagent for glucose testing being developed in 1908. Since then, glucose sensing has become one of the most rapidly growing areas of research and development in biosensor technology, creating a competitive market for more advanced, accurate, and convenient glucose monitoring. This article reviews the history of biosensors used for glucose monitoring, and major advancements in biosensor technology to enhance performance and improve quality of life for patients with diabetes.

关键词： Biosensor Continuous Glucose Monitor SMBG Advances in Glucose Monitoring Diabetes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Implementation of an international medical student pen-pal club:survey outcomes of perceptions in cultural competency and global health

引用

Global Health Journal 2024年第1期8卷 11-15页

作者： Max J.Goodman Jennifer Livschitz Ji Won Kim megan L.Schultz Medical College of Wisconsin MilwaukeeWI 53226USA Department of Pediatrics Division of Emergency MedicineMedical College of WisconsinMilwaukeeWI53226USA

Background:Pen-pal clubs(PPC)are used worldwide for students to learn about different cultures and other skillsets without the need for *** medical students are interested in global health opportunities abroad but costs,scheduling,and other barriers allow few to participate in such *** is important that medical students have nuanced global medical perspectives and can contribute to the global medical ***:The purpose of this study is to demonstrate that an international medical student PPC improves medical students'perspectives of cultural competency and global health ***:In 2021,a novel medical student PPC was established that began between an American and Japanese medical *** a shareholders meeting,it was decided that the number of medical schools involved globally be expanded through previous institutional affiliations and online *** total,the club connected 50 American medical students and 52 medical students from 17 high-and middle-income *** primary form of communication was online;pen-pals were encouraged to communicate monthly using provided topics,although frequency and way of communication was their *** February 2022,American PPC members were emailed a qualitative survey to assess the PPC's ***:The survey was completed by 42%of American PPC members,95%of which were 22-26 *** were preclinical medical students,60%whom were female and the majority either white(47%)or Asian(43%).Overall,the PPC positively influenced American medical students'perception of global medicine,medical education,and their cultural competency after joining the PPC compared to prior(P=0.004).Conclusion:PPCs encourage medical students to think from a global perspective and foster open-mindedness within varying social and cultural *** a global communication platform for students during medical school education may be an additional way to train aspiring global l

关键词： Pen-pals Medical student Global health Cultural competency

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Simultaneous genetic transformation and genome editing of mixed lines in soybean(Glycine max)and maize(Zea mays)

引用

aBIOTECH 2024年第2期5卷 169-183页

作者： Michelle Valentine David Butruille Frederic Achard Steven Beach Brent Brower-Toland Edward Cargill megan Hassebrock Jennifer Rinehart Thomas Ream Yurong Chen Bayer Crop Science 700 Chesterfield Parkway WChesterfieldMO 63017USA

Robust genome editing technologies are becoming part of the crop breeding ***,genome editing is usually conducted either at a single locus,or multiple loci,in a variety at one *** parallel genomics platforms,multifaceted genome editing capabilities,and flexible transformation systems enable targeted variation at nearly any locus,across the spectrum of genotypes within a *** demonstrate here the simultaneous transformation and editing of many genotypes,by targeting mixed seed embryo explants with genome editing machinery,followed by re-identification through genotyping after plant *** and Editing of Mixed Lines(TREDMIL)produced transformed individuals representing 101 of 104(97%)mixed elite genotypes in soybean;and 22 of 40(55%)and 9 of 36(25%)mixed maize female and male elite inbred genotypes,*** of edited genotypes for the regenerated individuals identified over 800 distinct edits at the Determinate1(Dt1)locus in samples from 101 soybean genotypes and 95 distinct Brown midrib3(Bm3)edits in samples from 17 maize *** results illustrate how TREDMIL can help accelerate the development and deployment of customized crop varieties for future precision breeding.

关键词： Maize Soybean Seed embryo explants TREDMIL Genetic transformation Genome editing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：