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Algebras of Hamieh and Abbas Used in the Dirac Equation

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Fabrication and Tissue Anchoring Performance of Nylon and Polypropylene Barbed Surgical Sutures

Journal of Modern Physics（现代物理） 2012年第9期

作者： gregory peter wene

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Journal of Donghua University(English Edition) 2013年第5期30卷 391-393页

作者：丛慧 ROE Simon MENTE peter RUFF gregory KING W Martin College of Textiles North Carolina State University College of Veterinary Medicine North Carolina State University Department of Biomedical Engineering North Carolina State University Vilcom Circle Chapel Hill College of Textiles Donghua University

Barbed surgical sutures have attracted worldwide attention in recent years. The plurality of barbs projecting out and penetrating into surrounding tissue eliminates the need for tying a knot. In the current study,nylon and polypropylene( PP) barbed sutures with two different barb geometries designed to anchor in porcine skin and tendon tissues were fabricated by a specially designed mechanical cutting machine. The tensile properties were compared between the barbed and unbarbed control sutures. The in vitro tissue anchoring ability was measured by two tissue /suture pullout tests,one for skin and the other for tendon tissue. Regardless of the type of tissue,the PP barbed suture with its higher modulus had a superior anchoring ability. Given the same suture material,improved anchoring performance was shown in tendon tissue.

关键词： barbed surgical sutures nylon polypropylene(PP) barb configuration skin and tendon

Service design for climate-smart agriculture

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Information Processing in Agriculture 2021年第2期8卷 328-340页

作者： Michael O’Grady David Langton Francesca Salinari peter Daly gregory O’Hare School of Computer Science University College DublinBelfieldDublin 4Ireland Origin Enterprises plc 4-6 RiverwalkCitywest Business CampusDublin 24Ireland

Holistic information systems for climate-smart agriculture demands the seamless integration of various categories of climate,meteorological and weather *** actor in the agricultural value chain may harness weather forecasts at the short and medium-range,local weather history,and prevailing climatic conditions,to inform *** is fundamental to many day-to-day operations,especially at farm-level,influencing decision-making at various spatial and temporal *** operational decisions ideally require hyper-localized service *** practice,integrating weather information into decision-support services demands a comprehensive understanding of various categories of weather-related data,their genesis,as well as the specific standards and data formats used by the meteorological *** paper considers the weather as a crucial context for the delivery of farm-level operational services in smart agriculture,highlighting critical issues for reflection by system designers during the service design and implementation phases.

关键词： Smart agriculture Climate services Agrometeorology Precision agriculture

CISSP For Dummies 2nd ed

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State of telemedicine use in pediatric surgery in the USA-where we stand and what we can gain from the COVID-19 pandemic: a scoping review

丛书名： For Dummies Computer/Tech

2007年

作者： Lawrence Miller peter H. gregory

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World Journal of Pediatric Surgery 2021年第1期4卷 43-48页

作者： gregory Metzger Kris Jatana Jordan Apfeld Katherine J Deans peter C Minneci Ihab Halaweish Department of Surgery The Ohio State University Wexner Medical CenterColumbusOhioUSA Department of Pediatric Surgery Nationwide Children's HospitalColumbusOhioUSA Department of Pediatric Otolaryngology Nationwide Children's HospitalColumbusOhioUSA Center for Surgical Outcomes Research Nationwide Children's HospitalColumbusOhioUSA

Background Within the last decade,the use of telemedicine within in primary care in the USA has greatly expanded;however,use remains uncommon in surgical *** spread of Coronavirus disease 2019(COVID-19)prompted healthcare institutions to limit in-person contact,resulting in an increase in telemedicine across all specialties,including pediatric *** aims of this review were to evaluate potential barriers that limited the use of telemedicine in pediatric surgery prior to the COVID-19 period and to define how best to incorporate its use into a pediatric surgical practice going *** A scoping review was performed to identify gaps in the literature pertaining to the use of telemedicine within general pediatric surgery in the USA prior to the outbreak of ***,a focused evaluation of the legislative and organizational policies on telemedicine was ***,findings were summarized and recommendations for future research developed in the context of understanding and overcoming barriers that have plagued widespread adoption in the *** Despite evidence of telemedicine being safe and well received by adult surgical patients,a total of only three studies representing original research on the use of telemedicine within pediatric surgery were *** and organizational policies regarding telemedicine have been altered in response to COVID-19,likely resulting in an increase in the use of telemedicine among pediatric *** Telemedicine offers a safe and effective option for patients seeking an alternative to the in-person clinic *** increased utilization of telemedicine during the COVID-19 pandemic will provide an opportunity to learn how best to leverage the technology to decrease disparities and to overcome previous barriers.

关键词： pediatric overcome prompt

Developments in the communication of scientific research

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Developments in the communication of scientific research

A portfolio approach to managing ecological risks of global change

中国化学会第二十五届学术年会

作者： peter gregory Managing Director Royal Society of Chemistry Publishing Dr

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Ecosystem Health and Sustainability 2017年第2期3卷 1-16页

作者： gregory H.Aplet peter S.McKinley The Wilderness Society 1660 Wynkoop StreetSuite 850DenverColorado 80202 USA The Wilderness Society 9 Union StreetSecond FloorHallowellMaine 04347 USA

The stressors of global environmental change make it impossible over the long term for natural systems to maintain their historical ***’s new objective must be to maintain the building blocks of future systems(e.g.,species,genes,soil types,and landforms)as they continuously *** of the certainty of change,some biologists and managers question continued use of retrospective conservation strategies(e.g.,reserves and restoration)informed by the historical range of *** strategies that manage toward anticipated conditions have joined the conservation toolbox alongside retrospective *** argue that high uncertainty around the rates and trajectories of climate and ecological change dictate the need to spread ecological risk using prospective and retrospective strategies across conservation networks in a systematic and adaptively managed *** term this a portfolio approach drawing comparisons to financial portfolio risk management as a means to maximize conservation benefit and *** with a financial portfolio,the portfolio approach requires that management allocations receive minimum temporal commitments to realize longer-term *** approach requires segregation of the strategies into three landscape zones to avoid counterproductive *** zones will be managed to(1)observe change,(2)resist change,and(3)facilitate *** offer guidelines for zone allocation based on ecological *** zones should follow principles of conservation design traditionally applied to *** to financial portfolios,zone performance is monitored to facilitate learning and potential reallocation for long-term net minimization of risk to the building blocks of future ecosystems.

关键词： adaptive management biodiversity connectivity global change gradients portfolio reserve restoration risk spreading transformation

The Apoptotic and Inflammatory Response of Brain Striatal Tissue to Extracorporeal Membrane Oxygenation (ECMO) Following the Model of Cardiac Arrest in Young Piglets

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World Journal of Cardiovascular Diseases 2021年第11期11卷 498-508页

作者： peter Pastuszko gregory Schears Joanna Kubin David Franklin Wilson Anna Pastuszko Mount Sinai Hospital New York USA Mayo Clinic Department of Anesthesiology Rochester USA Department of Biochemistry & Biophysics School of Medicine University of Pennsylvania Philadelphia USA

We investigated the effects of ECMO on pro-apoptotic and pro-inflammatory signaling in the striatum of piglets following cardiac arrest. 3-week-old piglets were anesthetized, paralyzed and ventilated. Oxygen in the ventilated gas was decreased from 21% to 7% - 10% over 30 min, then ventilation stopped until cardiac arrest. Three minutes after arrest, resuscitation began in two groups, without ECMO (CA) and with ECMO (ECMO). In a control group (C), the animals were sham operated. After 6 hours of recovery, the piglets were euthanized and stratum harvested. Measurement of apoptotic and inflammatory proteins was performed by RayBiotech, Inc. The results are means (6) ± SEM. There were no differences between CA and ECMO groups for anti-apoptotic proteins. ECMO significantly decreased pro-apoptotic proteins (Bax, cytoC, IGFBP-6, TNF-beta and TRAIR 1 and 3) as compared to CA group. Bcl-2 to Bax ratio increased in ECMO group suggesting that ECMO can least partially protect striatum from apoptotic injury. With respect to inflammation, ECMO significantly decreased both anti-inflammatory (ANG-1, FGF-21, IFN-alpha and beta, IGF-2, IL-10, IL-13, IL-1ra, IL-22, IL-4, IL-6, NCAM-1, SCF, TGF-alpha, TIMP-1and 2, VECF) and pro-inflammatory proteins (IL-12p40, IL-21, IL-15, IL-1 alpha and beta, IL-8, MIP-1 beta, OPG, PIGF-2, RANTES and TGF beta) in striatum of piglets. Conclusions: In a piglet model of cardiac arrest, ECMO significantly reduced le

关键词： Brain ECMO Apoptosis Inflammation

Use of the Environmental Impact Quotient to Estimate Health and Environmental Impacts of Pesticide Usage in Peruvian and Ecuadorian Potato Production

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Journal of Environmental Protection 2011年第5期2卷 581-591页

作者： peter Kromann Willy Pradel Donald Cole Arturo Taipe gregory A. Forbes 不详

Currently there is no effective mechanism for measuring the potential benefits of integrated pest and disease interven-tions in terms of reducing pesticide risks in potato production in developing countries. The environmental impact quotient (EIQ), a composite hazard indicator, was applied to data from potato field trials implemented in Ecuador to evaluate the practical boundaries of this metric related to potato production practices in the Andes. The EIQ was also applied to data from two independent farmer surveys, one from Peru and one from Ecuador to compare potato farming practices and the utility of the EIQ when applied to existing survey data. In the Ecuadorian field trials, the EIQ values, i.e., environmental impact (EI) per ha, varied greatly among the different potato systems tested and ranged from 40 for an integrated pest management system (resistant cultivar plus less hazardous pesticides) to 1235 for a high-input conventional system (susceptible cultivar plus frequent use of hazardous pesticides). Thus, this parameter demonstrates substantial variation under different conditions and different crop management approaches. EI per ha values from the two surveys fell within the range found in the field trial, but in the survey values were toward the lower end, ranging from 64 to 213. Methodical and biophysical factors are discussed that may account for the relatively low EI per ha found in the field survey data. Our study demonstrates the utility of the EIQ for assessing health and environmental hazards of potato production in the Andes and potentially other areas in the developing world. Nonetheless, there are limitations to the EIQ as presently used and care is needed in the interpretation of results. We see our work as an initial step in the development of an integrated metric to estimate environmental and human health hazards related to pesticide use in potato production in the diverse conditions of developing countries.

关键词： Insecticide Fungicide Farmer Training Andean Weevil Late Blight