检索结果-南通市图书馆

Comparative scoping study report for the extraction of microalgae oils from two subspecies of Chlorella vulgaris

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Clean Energy 2020年第3期4卷 233-246页

作者： Jasmine Kreft Eric Moe Nicholas Garcia Andrew ross Wayne Seames Chemical Engineering Department University of North Dakota243 Centennial Drive Stop 8155 Grand ForksND 58202USA School of Chemical and Process Engineering University of Leeds209 Clarendon RoadLeedsLS29DTWest YorkshireUK

The production of microalgae as a fatty acid oil resource for use in biofuels production is a widespread research topic at the lab *** contain a higher lipid content on a dry-weight basis compared to oilseeds such as ***,the growth and cultivation cycle of microalgae is 15 days,in comparison to soybeans,for which the cycle occurs once or twice ***,to date,it has been uneconomical to produce microalgae oils in a world-scale facility due to limitations in cultivating microalgae at commercial *** developments suggest that the use of heterotrophic microalgae may be economically feasible for large-scale oil *** assess this feasibility,a comparative scoping study was performed analysing the feasibility of an industrial-scale process plant for the growth and extraction of oil from *** were developed at the preliminary design level using heterotrophic subspecies and autotrophic subspecies of Chlorella *** Class 4 cost estimates and economic analyses were *** study concludes that processes based on heterotrophic microalgae are more likely to reach economic feasibility than processes using autotrophic ***,a few barriers still remain to achieving free-market economic viability.

关键词： algae oil lipids process design heterotrophic microalgae preliminary design economic analysis

Shelley and the apprehension of life

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Shelley and the apprehension of life

Perfect short-range ordered alloy with line-compound-like properties in the ZnSnN_(2):ZnO system

作者： (1979-)Wilson ross

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

npj Computational Materials 2020年第1期6卷 1132-1137页

作者： Jie Pan Jacob J.Cordell Garritt J.tucker Andriy Zakutayev Adele C.Tamboli Stephan Lany Materials Science Center National Renewable Energy LaboratoryGoldenCO 80401USA Department of Mechanical Engineering Colorado School of MinesGoldenCO 80401USA

We present a new solid-state material phase which is a disordered solid solution but offers many ordered line-compound *** emergent physical phenomena are rooted in the perfect short-range order which conserves the local octet *** model the dual-sublattice-mixed semiconductor alloy (ZnSnN_(2))_(1-x)(ZnO)_(2x) using first-principles calculations,Monte-Carlo simulations with a model Hamiltonian,and an extension of the regular solution model by incorporating short-range order.

关键词： alloy ordered compound

Large-diameter trees, snags, and deadwood in southern Utah, USA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2021年第1期10卷 130-141页

作者： James A.Lutz Soren Struckman tucker J.Furniss Joseph D.Birch Larissa *** Darren J.McAvoy Department of Wildland Resources S.J.and Jessie E.Quinney College of Natural ResourcesUtah State University5230 Old Main HillLoganUT 84322-5230USA. Department of Renewable Resources University of AlbertaEdmontonAlbertaCanada.

Background:The epidemic Dendroctonus rufipennis(spruce beetle)outbreak in the subalpine forests of the Colorado Plateau in the 1990s killed most larger Picea engelmannii(Engelmann spruce)*** quarter century later,the larger snags are beginning to fall,transitioning to deadwood(down woody debris)where they may influence fire behavior,regeneration,and habitat ***:We tracked all fallen trees≥1 cm in diameter at breast height(1.37-m high)and mapped all pieces of deadwood≥10-cm diameter and≥1 m in length within 13.64 ha of a high-elevation mixed-species forest in the Picea–Abies zone annually for 5 years from 2015 through *** examined the relative contribution of Picea engelmannii to snag and deadwood pools relative to other species and the relative contributions of large-diameter trees(≥33.2 cm at this subalpine site).We compared spatially explicit mapping of deadwood to traditional measures of surface fuels and introduce a new method for approximating vertical distribution of ***:In this mixed-species forest,there was relatively high density and basal area of live Picea engelmannii 20 years after the beetle outbreak(36 trees ha^(−1) and 1.94 m^(2) ha^(−1)≥10-cm diameter)contrasting with the near total mortality of mature Picea in forests *** from tree boles≥10-cm diameter on the ground had biomass of 42 Mg ha^(−1),7 Mg ha^(−1) of Picea engelmannii,and 35 Mg ha^(−1) of other *** live aboveground biomass was 119 Mg ha^(−1),while snag biomass was 36 Mg ha^(−1).Mean total fuel loading measured with planar transects was 63 Mg ha^(−1) but varied more than three orders of magnitude(0.1 to 257 Mg ha^(−1)).Planar transects recorded 32 Mg ha^(−1) of wood≥7.62-cm diameter compared to the 42 Mg ha^(−1) of wood≥10-cm diameter recorded by explicit *** pieces of deadwood were often stacked,forming a vertical structure likely to contribute to active fire ***:Bark beetle mortality in the 1990s has made

关键词： Cedar Breaks National Monument Dendroctonus rufipennis Utah Forest Dynamics Plot Vertical fuel structure

Managing extremely distal periprosthetic femoral supracondylar fractures of total knee replacements-a new PHILOS-ophy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

作者： Posnock ross.

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2017年第10期8卷 809-813页

作者： Kevin J Donnelly Adam tucker Angel Ruiz Neville W Thompson Department of Trauma and Orthopaedic Surgery Altnagelvin Hospital

We report two cases where a proximal humeral locking plate was used for the fixation of an extremely distal, type Ⅲ peri-prosthetic femoral fractures in relation to a total knee replacement(TKR). In each case there was concern regarding the fixation that could be achieved using the available anatomic distal femoral plates due to the size and bone quality of distal fragment. The design of the Proximal Humeral Internal Locking System(PHILOS) allows nine 3.5-mm locking screws to be placed over a small area in multiple directions. This allowed a greater number of fixation points to be achieved in the distal fragment. Clinical and radiological short-term follow-up(6-12 mo) has been satisfactory in both cases with no complications. We suggest the use of this implant for extremely distal femoral fractures arising in relation to the femoral component of a TKR.

关键词： Distal Femoral Periprosthetic Fracture PHILOS Open reduction and internal fixation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Future families

No association between cyclooxygenase-2 and uridine diphosphate glucuronosyltransferase 1A6 genetic polymorphisms and colon cancer risk

作者： Parke ross D.

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2009年第18期15卷 2240-2244页

作者： Cheryl L Thompson Sarah J Plummer Alona Merkulova Iona Cheng Thomas C tucker Graham Casey Li Li Departments of Family Medicine and Epidemiology and Biostatistics Case Centerfor Transdisciplinary Research on Energetics and CancerCase Comprehensive Cancer Center Case Western Reserve University. Cleveland OH 44106-7136 United States Department of Preventive Medicine University of Southern California Los Angeles CA90033-1006 United States Department of Cancer Biology Cleveland Clinic Foundation Cleveland OH 44195-0001 United States Department of Epidemiology and Biostatisticsand Institute for Human Genetics University of California SanFrancisco San Francisco CA 94143-0644 United States Markey Cancer Center University of Kentucky Lexington KY 40504-3381 United States

AIM：To investigate the association of variations in the cyclooxygenase-2 （COX2） and uridine diphosphate glucuronosyltransferase 1A6 （UGTIA6） genes and non-steroidal anti-inflammatory drugs （NSAIDs） use with risk of colon ***： NSAIDs, which are known to reduce the risk of colon cancer, act directly on COX2 and reduce its activity. Epidemiological studies have associated variations in the COX2 gene with colon cancer risk, but others were unable to replicate this finding. Similarly,enzymes in the UGT1A6 gene have been demonstrated to modify the therapeutic effect of NSAIDs on colon adenomas. Polymorphisms in the UGTIA6 gene have been statistically shown to interact with NSAID intake to influence risk of developing colon adenomas, but not colon cancer. Here we examined the association of tagging single nucleotide polymorphisms （SNPs） in the COX2 and UGTIA6 genes, and their interaction with NSAID consumption, on risk of colon cancer in a population of 422 colon cancer cases and 481 population ***： No SNP in either gene was individually statistically significantly associated with colon cancer, nor did they statistically significantly change the protective effect of NSAID consumption in our sample. Like others, we were unable to replicate the association of variants in the COX2 gene with colon cancer risk （P 〉 0.05）,and we did not observe that these variants modify the protective effect of NSAIDs （P 〉 0.05）. We were able to confirm the lack of association of variants in UGT1A6 with colon cancer risk, although further studies will have to be conducted to confirm the association of these variants with colon ***： Our study does not support a role of COX2 and UGTIA6 genetic variations in the development of colon cancer.

关键词： Uridine diphosphate glucuronosyltransferase 1A6 Cyclooxygenase-2 Non-steroidal anti-inflammatorydrugs Colon cancer Genetic association studies Singlenucleotide polymorphisms

Systems Biology: The take, input, vision, concerns and hopes

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 Biomedical Science and Engineering 2009年第2期2卷 78-79页

作者： Graeme tucker Lighthouse Laboratories SABC Loneragan Building Murdoch University South Street Murdoch Western Australia 6150

Systems Biology is a relatively new branch of biology that brings together an interdisciplinary team of scientist, computer engineers and mathematicians. Biomedicine can gain much from the input of Systems Biology. The object and aims of this article centre on clarification and direction for Systems Biology, notably in regard to human health and disease.

关键词： Systems Biology