Morphological analysis of dendrites and spines by hybridization of ridge detection with twin support vector machine.

abstract：Background:Reward seeking and avoidance of punishment are key motivational processes. Brain-imaging studies often use the Monetary Incentive Delay Task (MIDT) to evaluate motivational processes involved in maladaptive behavior. Although the bulk of research has been done on the MIDT reward events, little is known about...

journal_title：PeerJ

authors： Dugré JR,Dumais A,Bitar N,Potvin S

更新日期：2018-05-10 00:00:00

abstract：Background:Vitamin D 1α-hydroxylase CYP27B1 is the key factor in the vitamin D pathway. Previously, we analyzed the expression of CYP27B1 in human gingival fibroblasts in vitro. In the present study, we analyzed the gingival expression of CYP27B1 in vivo. Methods:Forty-two patients with periodontitis Stage IV Grade C ...

journal_title：PeerJ

authors： Liu K,Han B,Hou J,Zhang J,Su J,Meng H

更新日期：2021-01-04 00:00:00

abstract：:Anonymous student evaluations of teaching (SETs) are used by colleges and universities to measure teaching effectiveness and to make decisions about faculty hiring, firing, re-appointment, promotion, tenure, and merit pay. Although numerous studies have found that SETs correlate with various teaching effectiveness irr...

journal_title：PeerJ

authors： Uttl B,Smibert D

更新日期：2017-05-09 00:00:00

abstract：:Reliable abundance estimates for species are fundamental in ecology, fisheries, and conservation. Consequently, predictive models able to provide reliable estimates for un- or poorly-surveyed locations would prove a valuable tool for management. Based on commonly used environmental and physical predictors, we develope...

journal_title：PeerJ

authors： Sequeira AMM,Mellin C,Lozano-Montes HM,Meeuwig JJ,Vanderklift MA,Haywood MDE,Babcock RC,Caley MJ

更新日期：2018-04-17 00:00:00

abstract：:In this study, silver nanoparticles (NP) were synthesized by two methods: using an aqueous extract of Mentha spicata leaves and using citrate ions as stabilizing agent, and the cytotoxicity and anticancer activity of both NP were evaluated in vitro. The particles synthesized with the aqueous extract were spherical wit...

journal_title：PeerJ

authors： Torres-Martínez Y,Arredondo-Espinoza E,Puente C,González-Santiago O,Pineda-Aguilar N,Balderas-Rentería I,López I,Ramírez-Cabrera MA

更新日期：2019-12-09 00:00:00

abstract：:A wide range of biotic stresses (BS) and abiotic stresses (AS) adversely affect plant growth and productivity worldwide. The study of individual genes cannot be considered as an effective approach for the understanding of tolerance mechanisms, since these stresses are frequent and often in combination with each other,...

journal_title：PeerJ

authors： Ashrafi-Dehkordi E,Alemzadeh A,Tanaka N,Razi H

更新日期：2018-07-17 00:00:00

abstract：:Forest soils sequester a large amount of carbon (C) and have a significant effect on the global C balance. Forests are commonly managed to maintain certain age structures but the effects of this management on soil C pools (kg C m-2) is still uncertain. We compared 40-year-old (1GF) and 24-year-old (2GF) plantations of...

journal_title：PeerJ

authors： Ma J,Han H,Cheng X

更新日期：2020-01-21 00:00:00

abstract：:The mutant form GGBP/H152C of the D-glucose/D-galactose-binding protein with the solvatochromic dye BADAN linked to cysteine residue Cys 152 can be used as a potential base for a sensitive element of glucose biosensor system. We investigated the influence of various external factors on the physical-chemical properties...

journal_title：PeerJ

authors： Fonin AV,Stepanenko OV,Povarova OI,Volova CA,Philippova EM,Bublikov GS,Kuznetsova IM,Demchenko AP,Turoverov KK

更新日期：2014-03-18 00:00:00

abstract：:The whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is a cryptic species complex, including members that are pests of global importance. This study presents a screening of B. tabaci species in China for infection by the primary endosymbiont, Portiera aleyrodidarum, and two secondary endosymbionts, Arsenop...

journal_title：PeerJ

authors： Tang XT,Cai L,Shen Y,Du YZ

更新日期：2018-08-29 00:00:00

abstract：BACKGROUND:Aspergillus niger, along with many other lignocellulolytic fungi, has been widely used as a commercial workhorse for cellulase production. A fungal cellulase system generally includes three major classes of enzymes i.e., β-glucosidases, endoglucanases and cellobiohydrolases. Cellobiohydrolases (CBH) are vita...

journal_title：PeerJ

authors： Woon JS,Mackeen MM,Illias RM,Mahadi NM,Broughton WJ,Murad AMA,Abu Bakar FD

更新日期：2017-10-12 00:00:00

abstract：:Climate change will significantly affect plant distribution as well as the quality of medicinal plants. Although numerous studies have analyzed the effect of climate change on future habitats of plants through species distribution models (SDMs), few of them have incorporated the change of effective content of medicina...

journal_title：PeerJ

authors： Guo Y,Wei H,Lu C,Gao B,Gu W

更新日期：2016-10-20 00:00:00

abstract：:The use of small unoccupied aircraft systems (UAS) for ecological studies and wildlife population assessments is increasing. These methods can provide significant benefits in terms of costs and reductions in human risk, but little is known if UAS-based approaches cause disturbance of animals during operations. To addr...

journal_title：PeerJ

authors： Arona L,Dale J,Heaslip SG,Hammill MO,Johnston DW

更新日期：2018-03-19 00:00:00

abstract：:Studies on the adverse health effects caused by azo dyes are insufficient and quite contradictory. This work aims to investigate the possible toxic effect of two types of widely used food additives, Sunset Yellow and Allura Red, by assessing the physiological, histopathological and ultrastructural changes in the liver...

journal_title：PeerJ

authors： Khayyat LI,Essawy AE,Sorour JM,Soffar A

更新日期：2018-09-28 00:00:00

abstract：:Phlorotannins are primary and/or secondary metabolites found exclusively in brown seaweeds, but their geographic distribution and abundance dynamic are not very well understood. In this study we evaluated the phlorotannin concentrations among and within-species of brown seaweeds in a broad latitudinal context (range o...

journal_title：PeerJ

authors： Ank G,da Gama BAP,Pereira RC

更新日期：2019-08-14 00:00:00

abstract：:Background. Nasal continuous positive airway pressure (nCPAP) is a widely accepted technique of non-invasive respiratory support in premature infants with respiratory distress syndrome due to lack of lung surfactant. If this approach fails, the next step is often intubation, mechanical ventilation (MV) and intratrache...

journal_title：PeerJ

authors： Walther FJ,Hernández-Juviel JM,Waring AJ

更新日期：2014-05-27 00:00:00

abstract：:Supertree methods enable the reconstruction of large phylogenies. The supertree problem can be formalized in different ways in order to cope with contradictory information in the input. Some supertree methods are based on encoding the input trees in a matrix; other methods try to find minimum cuts in some graph. Recen...

journal_title：PeerJ

authors： Fleischauer M,Böcker S

更新日期：2018-06-08 00:00:00

abstract：:Sponges are efficient filter feeders, removing significant portions of particulate and dissolved organic matter (POM, DOM) from the water column. While the assimilation and respiration of POM and DOM by sponges and their abundant microbial symbiont communities have received much attention, there is virtually no inform...

journal_title：PeerJ

authors： Fiore CL,Freeman CJ,Kujawinski EB

更新日期：2017-01-11 00:00:00

abstract：:We present the first comprehensive review of the present and past shark and ray diversity in marine waters of Tropical America, examining the patterns of distribution in the Eastern Central Pacific (EP) and Western Central Atlantic (WA) realms. We identified the major regions of diversity and of endemism, and explored...

journal_title：PeerJ

authors： Carrillo-Briceño JD,Carrillo JD,Aguilera OA,Sanchez-Villagra MR

更新日期：2018-07-20 00:00:00

abstract：:China has experienced intensive urbanization over the past decades. However, it is still unclear about the influence of urbanization on urban thermal comfort and how the effect varies with climate condition. Based on long-term daily meteorological data from 1990 to 2015 in four Chinese cities undergoing rapid urbaniza...

journal_title：PeerJ

authors： Fu Y,Ren Z,Yu Q,He X,Xiao L,Wang Q,Liu C

更新日期：2019-11-11 00:00:00

abstract：:Helicobacter pylori is a human pathogenic bacterium with a high genomic plasticity. Although the functional CRISPR-Cas system has not been found in its genome, CRISPR-like loci have been recently identified. In this work, 53 genomes from different geographical areas are analyzed for the search and analysis of variabil...

journal_title：PeerJ

authors： García-Zea JA,de la Herrán R,Robles Rodríguez F,Navajas-Pérez R,Ruiz Rejón C

更新日期：2019-01-11 00:00:00

abstract：Background:Current and future changes in rainfall amount and frequency may particularly impact annual plants in desert ecosystems. The winter annual Echinops gmelinii Turcz. is widely distributed in the desert habitats of northern China and is a dominant pioneer annual plant following sand stabilization in the Tengger ...

journal_title：PeerJ

authors： Wang Y,Li X,Liu L,Zhao J,Sun J

更新日期：2019-11-29 00:00:00

abstract：Background:Quality of life is an important health outcome for older persons. It predicts the adverse outcomes of institutionalization and premature death. The aim of this cross-sectional study was to determine the influence of both disability in activities of daily living (ADL) and instrumental activities of daily livi...

journal_title：PeerJ

authors： Gobbens RJ

更新日期：2018-08-09 00:00:00

abstract：:The effects of age on performance of life-history traits are diverse, but a common outcome is senescence, an irreversible deterioration of physical and physiological capabilities of older individuals. Immune response is potentially bound to senescence. However, little is known about immune response ageing in amphibian...

journal_title：PeerJ

authors： Zamora-Camacho FJ,Comas M

更新日期：2018-12-20 00:00:00

abstract：:Hydrolysis of ATP by Na+/K+-ATPase, a P-Type ATPase, catalyzing active Na+ and K+ transport through cellular membranes leads transiently to a phosphorylation of its catalytical α-subunit. Surprisingly, three-dimensional molecular structure analysis of P-type ATPases reveals that binding of ATP to the N-domain connecte...

journal_title：PeerJ

authors： Tejral G,Sopko B,Necas A,Schoner W,Amler E

更新日期：2017-03-14 00:00:00

abstract：:Multimodal imaging enables sensitive measures of the architecture and integrity of the human brain, but the high-dimensional nature of advanced brain imaging features poses inherent challenges for the analyses and interpretations. Multivariate age prediction reduces the dimensionality to one biologically informative s...

journal_title：PeerJ

authors： Richard G,Kolskår K,Sanders AM,Kaufmann T,Petersen A,Doan NT,Monereo Sánchez J,Alnæs D,Ulrichsen KM,Dørum ES,Andreassen OA,Nordvik JE,Westlye LT

更新日期：2018-11-30 00:00:00

abstract：:The amphibian skin microbiome has been the focus of recent studies aiming to better understand the role of these microbial symbionts in host defense against disease. However, host-associated microbial communities are complex and dynamic, and changes in their composition and structure can influence their function. Unde...

journal_title：PeerJ

authors： Estrada A,Hughey MC,Medina D,Rebollar EA,Walke JB,Harris RN,Belden LK

更新日期：2019-06-21 00:00:00

abstract：:The Cuatro Ciénegas Basin (CCB) comprises several oligotrophic aquatic ecosystems limited by phosphorus. These aquatic systems are dominated by a high prokaryotic diversity, shaped by the stress of low nutrient supplies and interspecific competition. Although fungi constitute a diverse and important component of micro...

journal_title：PeerJ

authors： Velez P,Gasca-Pineda J,Rosique-Gil E,Eguiarte LE,Espinosa-Asuar L,Souza V

更新日期：2016-06-02 00:00:00

abstract：:Fear is a response to a known threat, anxiety is a response to a perceived threat. Both of these affective states can be detrimental to animal welfare in modern housing environments. In comparison to the well-validated tests for assessing fear in laying hens, tests for measuring anxiety are less developed. Perception ...

journal_title：PeerJ

authors： Campbell DLM,Taylor PS,Hernandez CE,Stewart M,Belson S,Lee C

更新日期：2019-07-10 00:00:00

abstract：Objective:To synthetize the scientific evidence on the association between serum lipids and premature mortality in Latin America (LA). Methods:Five data bases were searched from inception without language restrictions: Embase, Medline, Global Health, Scopus and LILACS. Population-based studies following random samplin...

journal_title：PeerJ

authors： Carrillo-Larco RM,Albitres-Flores L,Barengo NC,Bernabe-Ortiz A

更新日期：2019-10-04 00:00:00

abstract：:Much genomic-scale, especially transcriptomic, data on spider phylogeny has accumulated in the last few years. These data have recently been used to investigate the diverse architectures and the origin of spider webs, concluding that the ancestral spider spun no foraging web, that spider webs evolved de novo 10-14 tim...

journal_title：PeerJ

authors： Coddington JA,Agnarsson I,Hamilton CA,Bond JE

更新日期：2019-04-04 00:00:00