共查询到20条相似文献,搜索用时 31 毫秒
1.
Ignacio Ribera Javier Fresneda Ruxandra Bucur Ana Izquierdo Alfried P Vogler Jose M Salgado Alexandra Cieslak 《BMC evolutionary biology》2010,10(1):29
Background
Cave organisms have been used as models for evolution and biogeography, as their reduced above-ground dispersal produces phylogenetic patterns of area distribution that largely match the geological history of mountain ranges and cave habitats. Most current hypotheses assume that subterranean lineages arose recently from surface dwelling, dispersive close relatives, but for terrestrial organisms there is scant phylogenetic evidence to support this view. We study here with molecular methods the evolutionary history of a highly diverse assemblage of subterranean beetles in the tribe Leptodirini (Coleoptera, Leiodidae, Cholevinae) in the mountain systems of the Western Mediterranean. 相似文献2.
Martin Petřek Michal Otyepka Pavel Banáš Pavlína Košinová Jaroslav Koča Jiří Damborský 《BMC bioinformatics》2006,7(1):316-9
Background
The main aim of this study was to develop and implement an algorithm for the rapid, accurate and automated identification of paths leading from buried protein clefts, pockets and cavities in dynamic and static protein structures to the outside solvent. 相似文献3.
Background
Campylobacter concisus is an emerging enteric pathogen, yet it is commonly isolated from feces and the oral cavities of healthy individuals. This genetically complex species is comprised of several distinct genomospecies which may vary in pathogenic potential. 相似文献4.
Aims
This study aimed to examine heat curing effect (30–100°C) on antifungal activities of lime oil and its components (limonene, p‐cymene, β‐pinene and α‐pinene) at concentrations ranging from 100 to 300 μl ml?1 against Aspergillus niger in microbiological medium and to optimize heat curing of lime oil for efficient mould control on sedge (Lepironia articulata).Methods and Results
Broth dilution method was employed to determine lime oil minimum inhibitory concentration, which was at 90 μl ml?1 with heat curing at 70°C. Limonene, a main component of lime oil, was an agent responsible for temperature dependencies of lime oil activities observed. Response surface methodology was used to construct the mathematical model describing a time period of zero mould growth on sedge as functions of heat curing temperature and lime oil concentration. Heat curing of 90 μl ml?1 lime oil at 70°C extended a period of zero mould growth on sedge to 18 weeks under moist conditions.Conclusions
Heat curing at 70°C best enhanced antifungal activity of lime oil against A. niger both in medium and on sedge.Significance and Impact of the Study
Heat curing of lime oil has potential to be used to enhance the antifungal safety of sedge products. 相似文献5.
Background
Annotation of protein functions is an important task in the post-genomic era. Most early approaches for this task exploit only the sequence or global structure information. However, protein surfaces are believed to be crucial to protein functions because they are the main interfaces to facilitate biological interactions. Recently, several databases related to structural surfaces, such as pockets and cavities, have been constructed with a comprehensive library of identified surface structures. For example, CASTp provides identification and measurements of surface accessible pockets as well as interior inaccessible cavities. 相似文献6.
Robert J Asher Sarita Maree Gary Bronner Nigel C Bennett Paulette Bloomer Paul Czechowski Matthias Meyer Michael Hofreiter 《BMC evolutionary biology》2010,10(1):69
Background
Golden moles (Chrysochloridae) are small, subterranean, afrotherian mammals from South Africa and neighboring regions. Of the 21 species now recognized, some (e.g., Chrysochloris asiatica, Amblysomus hottentotus) are relatively common, whereas others (e.g., species of Chrysospalax, Cryptochloris, Neamblysomus) are rare and endangered. Here, we use a combined analysis of partial sequences of the nuclear GHR gene and morphological characters to derive a phylogeny of species in the family Chrysochloridae. 相似文献7.
Marie Hronik-Tupaj William L Rice Mark Cronin-Golomb David L Kaplan Irene Georgakoudi 《Biomedical engineering online》2011,10(1):9
Background
Electric fields are integral to many biological events, from maintaining cellular homeostasis to embryonic development to healing. The application of electric fields offers substantial therapeutic potential, while optimal dosing regimens and the underlying mechanisms responsible for the positive clinical impact are poorly understood. 相似文献8.
Annapurna Kumari Paramita Mahapatra Vijay Kumar Garlapati Rintu Banerjee 《Biotechnology for biofuels》2009,2(1):1-7
Background
Transesterification of Jatropha oil was carried out in t-butanol solvent using immobilized lipase from Enterobacter aerogenes. The presence of t-butanol significantly reduced the negative effects caused by both methanol and glycerol. The effects of various reaction parameters on transesterification of Jatropha oil were studied. 相似文献9.
Heinz Stichnothe Frank Schuchardt 《The International Journal of Life Cycle Assessment》2010,15(9):907-915
Background, aim, and scope
Globally, 45 million metric tonnes of palm oil has been produced in 2009. The production of 1 t crude palm oil requires 5 t of fresh fruit bunches (FFB). On average, processing of 1 t FFB in palm oil mills generates 230 kg empty fruit bunches (EFB) and 650 kg palm oil mill effluent (POME) as residues. These residues cause considerable environmental burdens, particularly greenhouse gas emissions. In order to reduce those emissions, four waste management options are compared in the present study using 1,000 kg of FFB as functional unit. 相似文献10.
Mandeep S Jassal Gueno G Nedeltchev Jonathan Osborne William R Bishai 《BMC microbiology》2011,11(1):49
Background
The rabbit model is an ideal means to study the pathogenesis of tuberculosis due to its semblance to the disease in humans. We have previously described the results using a bronchoscopic route of infection with live bacilli as a reliable means of generating lung cavities in sensitized rabbits. The role of sensitization in the development of disease outcomes has been well established in several animal models. We have described here the varying gross pathology that result from lack of sensitization with heat-killed M. bovis prior to high-dose bronchoscopic infection with live bacilli. 相似文献11.
Alireza Babaei Seyed Reza Tabaei-Aghdaei Morteza Khosh-Khui Reza Omidbaigi Mohammad Reza Naghavi Gerhard D Esselink Marinus JM Smulders 《BMC plant biology》2007,7(1):12
Background
Damask roses (Rosa damascena Mill.) are mainly used for essential oil production. Previous studies have indicated that all production material in Bulgaria and Turkey consists of only one genotype. Nine polymorphic microsatellite markers were used to analyze the genetic diversity of 40 accessions of R. damascena collected across major and minor rose oil production areas in Iran. 相似文献12.
Determination of GHG contributions by subsystems in the oil palm supply chain using the LCA approach
Yuen May Choo Halimah Muhamad Zulkifli Hashim Vijaya Subramaniam Chiew Wei Puah YewAi Tan 《The International Journal of Life Cycle Assessment》2011,16(7):669-681
Purpose
With increasing attention on sustainable development, the environmental and social relevance of palm oil production are now important trade issues. The life cycle assessment (LCA) study of Malaysian oil palm products from mineral soils including palm biodiesel was aimed to provide baseline information on the environmental performance of the industry for drawing up policies pertaining to the sustainable production. The share of greenhouse gas (GHG) contribution by the various subsystems in the oil palm supply chain is considered here. 相似文献13.
Richard Baran Martin Robert Makoto Suematsu Tomoyoshi Soga Masaru Tomita 《BMC bioinformatics》2007,8(1):72
Background
Density plot visualizations (also referred to as heat maps or color maps) are widely used in different fields including large-scale omics studies in biological sciences. However, the current color-codings limit the visualizations to single datasets or pairwise comparisons. 相似文献14.
15.
Max Bylesjö Vincent Segura Raju Y Soolanayakanahally Anne M Rae Johan Trygg Petter Gustafsson Stefan Jansson Nathaniel R Street 《BMC plant biology》2008,8(1):82
Background
An increased understanding of leaf area development is important in a number of fields: in food and non-food crops, for example short rotation forestry as a biofuels feedstock, leaf area is intricately linked to biomass productivity; in paleontology leaf shape characteristics are used to reconstruct paleoclimate history. Such fields require measurement of large collections of leaves, with resulting conclusions being highly influenced by the accuracy of the phenotypic measurement process. 相似文献16.
Background
Rice fields are efficient breeding places for malaria vectors in Madagascar. In order to establish as easily as possible if a rice field is an effective larval site for anophelines, we compared classical dipping versus a net as methods of collecting larvae. 相似文献17.
Li Ping-Chia Lai I-Ju Lin Yu-Ching Chang Li-Ching Chen Wen-Chung 《Journal of biomedical science》2009,16(1):58
Background
Airborne particulate matter, from cooking oil, smoking, engine exhaust and other sources, is associated with the development of atherosclerosis and myocardial infarction. In order to explore the cellular and molecular events following exposure of rats to lard oil smoke, we measured the generation of reactive oxygen species (ROS), substance P, cellular adhesion molecules, and thrombosis in relation to inhibitors of substance P, the NK-1 receptor, and antioxidants. 相似文献18.
Background
The identification of β-barrel membrane proteins out of a genomic/proteomic background is one of the rapidly developing fields in bioinformatics. Our main goal is the prediction of such proteins in genome/proteome wide analyses. 相似文献19.
Soil-Behaviour of Phytophthora clandestina 总被引:1,自引:0,他引:1
Investigations were undertaken to study the nature and behaviour of P. clandestina in soil. The pathogen was recovered only from soil sievings 250–499 μm and 500 μm–0.99 mm, containing small root fragments. In soil the introduced inoculum of the fungus was incapable of saprophytically and competitively colonizing the dead cotyledons of subterranean clover used as bait material. Exposure of the inoculum to increasing numbers of microbes by adding greater proportions of nonsterile fields, oil to the growth medium of the plant had no significant effect on survival rate and fresh shoot weight of subterranean clover. However, microbes present in the field soil reduced the severity of root rot of subterranean clover. P. clandestina was, able to spread between 15–30 mm through pasteurized soil within a period of 20 days. 相似文献
20.
Hamid Sobhanian Roya Razavizadeh Yohei Nanjo Ali Akbar Ehsanpour Ferdous Rastgar Jazii Nasrin Motamed Setsuko Komatsu 《Proteome science》2010,8(1):19