abstract：:We created an easy-to-use device for operant licking experiments and another device that records environmental variables. Both devices use the Raspberry Pi computer to obtain data from multiple input devices (e.g., radio frequency identification tag readers, touch and motion sensors, environmental sensors) and activat...

journal_title：PeerJ

authors： Longley M,Willis EL,Tay CX,Chen H

更新日期：2017-02-14 00:00:00

abstract：BACKGROUND:Several recent studies have shown that total scores on depressive symptom measures in a general population approximate an exponential pattern except for the lower end of the distribution. Furthermore, we confirmed that the exponential pattern is present for the individual item responses on the Center for Epi...

journal_title：PeerJ

authors： Tomitaka S,Kawasaki Y,Ide K,Akutagawa M,Yamada H,Yutaka O,Furukawa TA

更新日期：2017-02-09 00:00:00

abstract：BACKGROUND:Constant reviews of the caring behavior of nurses and patient satisfaction help to improve the quality of nursing. The aim of our research was to explore relationships between the level of nursing education, the perception of nurses and nursing assistants of Watson's carative factors, and patient satisfactio...

journal_title：PeerJ

authors： Pajnkihar M,Štiglic G,Vrbnjak D

更新日期：2017-02-07 00:00:00

abstract：BACKGROUND:Individuals with unilateral lower limb amputation have a high risk of developing knee osteoarthritis (OA) in their intact limb as they age. This risk may be related to joint loading experienced earlier in life. We hypothesized that loading during walking would be greater in the intact limb of young US milita...

journal_title：PeerJ

authors： Miller RH,Krupenevich RL,Pruziner AL,Wolf EJ,Schnall BL

更新日期：2017-02-02 00:00:00

abstract：:We investigated population dynamics, breeding pairs, breeding habitat selection, nest density, distance between neighboring nests, nest survival, reproductive success, and recruitment rate for Black-necked Cranes (BNC, Grus nigricollis) during 2013-2015 in Yanchiwan National Nature Reserve (YCW), Gansu, China. Numbers...

journal_title：PeerJ

authors： Zhang L,An B,Shu M,Yang X

更新日期：2017-01-31 00:00:00

abstract：:Five tropical seaweeds, Kappaphycus alvarezii (Doty) Doty ex P.C. Silva, Padina australis Hauck, Sargassum binderi Sonder ex J. Agardh (syn. S. aquifolium (Turner) C. Agardh), Sargassum siliquosum J. Agardh and Turbinaria conoides (J. Agardh) Kützing, were incubated in seawater of pH 8.0, 7.8 (ambient), 7.6, 7.4 and 7...

journal_title：PeerJ

authors： Mithoo-Singh PK,Keng FS,Phang SM,Leedham Elvidge EC,Sturges WT,Malin G,Abd Rahman N

更新日期：2017-01-25 00:00:00

abstract：:Streptococcus pneumoniae remains the leading causative pathogen in pediatric pneumonia and bacteremia throughout the world. The invasive pneumococcal disease (IPD) is known as isolation of S. pneumoniae from a normally sterile site (e.g., blood, cerebrospinal fluid, synovial fluid, pericardial fluid, pleural fluid, or...

journal_title：PeerJ

authors： Chiu NC,Chi H,Peng CC,Chang HY,Huang DT,Chang L,Lei WT,Lin CY

更新日期：2017-01-25 00:00:00

abstract：:Root hairs are unicellular elongations of certain rhizodermal cells that improve the uptake of sparingly soluble and immobile soil nutrients. Among different Arabidopsis thaliana genotypes, root hair density, length and the local acclimation to low inorganic phosphate (Pi) differs considerably, when analyzed on split ...

journal_title：PeerJ

authors： Stetter MG,Benz M,Ludewig U

更新日期：2017-01-24 00:00:00

abstract：:Type I restriction-modification enzymes are multisubunit, multifunctional molecular machines that recognize specific DNA target sequences, and their multisubunit organization underlies their multifunctionality. EcoR124I is the archetype of Type I restriction-modification family IC and is composed of three subunit type...

journal_title：PeerJ

authors： Bialevich V,Sinha D,Shamayeva K,Guzanova A,Řeha D,Csefalvay E,Carey J,Weiserova M,Ettrich RH

更新日期：2017-01-18 00:00:00

abstract：:Maximakinin (MK), an amphibian peptide possessing the C-terminal sequence of bradykinin (BK), is a BK B2 receptor (B2R) agonist eliciting prolonged signaling. We reinvestigated this 19-mer for species-specific pharmacologic profile, in vivo confirmation of resistance to inactivation by angiotensin converting enzyme (A...

journal_title：PeerJ

authors： Charest-Morin X,Bachelard H,Jean M,Marceau F

更新日期：2017-01-18 00:00:00

abstract：:Autophagy serves as a turnover mechanism for the recycling of redundant and/or damaged macromolecules present in eukaryotic cells to re-use them under starvation conditions via a double-membrane structure known as autophagosome. A set of eukaryotic genes called autophagy-related genes (ATGs) orchestrate this highly el...

journal_title：PeerJ

authors： Aslan E,Küçükoğlu N,Arslanyolu M

更新日期：2017-01-17 00:00:00

abstract：:Flies use specialized photoreceptors R7 and R8 in the dorsal rim area (DRA) to detect skylight polarization. R7 and R8 form a tiered waveguide (central rhabdomere pair, CRP) with R7 on top, filtering light delivered to R8. We examine how the division of a given resource, CRP length, between R7 and R8 affects their abi...

journal_title：PeerJ

authors： Heras FJ,Laughlin SB

更新日期：2017-01-12 00:00:00

abstract：:Species distribution models (SDMs) have become an essential tool in ecology, biogeography, evolution and, more recently, in conservation biology. How to generalize species distributions in large undersampled areas, especially with few samples, is a fundamental issue of SDMs. In order to explore this issue, we used the...

journal_title：PeerJ

authors： Mi C,Huettmann F,Guo Y,Han X,Wen L

更新日期：2017-01-12 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：BACKGROUND:Algae encompass a wide array of photosynthetic organisms that are ubiquitously distributed in aquatic and terrestrial habitats. Algal species often bloom in aquatic ecosystems, providing a significant autochthonous carbon input to the deeper anoxic layers in stratified water bodies. In addition, various alga...

journal_title：PeerJ

authors： Morrison JM,Murphy CL,Baker K,Zamor RM,Nikolai SJ,Wilder S,Elshahed MS,Youssef NH

更新日期：2017-01-10 00:00:00

abstract：:The adaptative bleaching hypothesis (ABH) states that, depending on the symbiotic flexibility of coral hosts (i.e., the ability of corals to "switch" or "shuffle" their algal symbionts), coral bleaching can lead to a change in the composition of their associated Symbiodinium community and, thus, contribute to the cora...

journal_title：PeerJ

authors： Rouzé H,Lecellier GJ,Saulnier D,Planes S,Gueguen Y,Wirshing HH,Berteaux-Lecellier V

更新日期：2017-01-05 00:00:00

abstract：BACKGROUND:Mycobacterium avium subsp. hominissuis (MAH) is an emerging opportunistic human pathogen. It can cause pulmonary infections, lymphadenitis and disseminated infections in immuno-compromised patients. In addition, MAH is widespread in the environment, since it has been isolated from water, soil or dust. In rec...

journal_title：PeerJ

authors： Sanchini A,Dematheis F,Semmler T,Lewin A

更新日期：2017-01-03 00:00:00

abstract：INTRODUCTION:Theory predicts that habitat fragmentation, by reducing population size and increasing isolation among remnant populations, can alter their genetic diversity and structure. A cascade of effects is expected: genetic drift and inbreeding after a population bottleneck, changes in biotic interactions that may ...

journal_title：PeerJ

authors： Suárez-Montes P,Chávez-Pesqueira M,Núñez-Farfán J

更新日期：2016-12-22 00:00:00

abstract：:The epidemic of mass mortality of oak trees by Japanese oak wilt has affected secondary deciduous broadleaved forests that have been used as coppices in Japan. The dieback of oak trees formed gaps in the crown that would be expected to enhance the regeneration of shade-intolerant pioneer species. However, foraging by ...

journal_title：PeerJ

authors： Itô H

更新日期：2016-12-22 00:00:00

abstract：:The genus Elatine contains ca 25 species, all of which are small, herbaceous annuals distributed in ephemeral waters on both hemispheres. However, due to a high degree of morphological variability (as a consequence of their amphibious life-style), the taxonomy of this genus remains controversial. Thus, to fill this ga...

journal_title：PeerJ

authors： Sramkó G,Molnár V A,Tóth JP,Laczkó L,Kalinka A,Horváth O,Skuza L,Lukács BA,Popiela A

更新日期：2016-12-21 00:00:00

abstract：:We have developed a novel bio-tofu, made from mixed soy and cow milk (MSCM), using Lactobacillus helveticus MB2-1 and Lactobacillus plantarum B1-6 incorporated with microbial transglutaminase (MTGase) as coagulant. MTGase was added to improve the textural properties and suit for cooking. However, the effect of MTGase ...

journal_title：PeerJ

authors： Xing G,Rui X,Jiang M,Xiao Y,Guan Y,Wang D,Dong M

更新日期：2016-12-15 00:00:00

abstract：:Recent improvements in next-generation sequencing (NGS) technologies can facilitate the obtainment of mitochondrial genomes. However, it is not clear whether NGS could be effectively used to reconstruct the mitogenome with high gene rearrangement. These high rearrangements would cause amplification failure, and/or ass...

journal_title：PeerJ

authors： Yuan S,Xia Y,Zheng Y,Zeng X

更新日期：2016-12-15 00:00:00

abstract：:We revise the genus Conostigmus Dahlbom 1858 occurring in Madagascar, based on data from more specimens than were examined for the latest world revision of the genus. Our results yield new information about intraspecific variability and the nature of the atypical latitudinal diversity gradient (LDG) observed in Ceraph...

journal_title：PeerJ

authors： Mikó I,Trietsch C,Sandall EL,Yoder MJ,Hines H,Deans AR

更新日期：2016-12-13 00:00:00

abstract：BACKGROUND:Seed-applied neonicotinoids are widely used in agriculture, yet their effects on non-target species remain incompletely understood. One important group of non-target species is arthropod natural enemies (predators and parasitoids), which contribute considerably to suppression of crop pests. We hypothesized t...

journal_title：PeerJ

authors： Douglas MR,Tooker JF

更新日期：2016-12-07 00:00:00

abstract：:Harmine is the β-carboline alkaloid with the highest concentration in the psychotropic plant decoction Ayahuasca. In rodents, classical antidepressants reverse the symptoms of depression by stimulating neuronal proliferation. It has been shown that Ayahuasca presents antidepressant effects in patients with depressive ...

journal_title：PeerJ

authors： Dakic V,Maciel RM,Drummond H,Nascimento JM,Trindade P,Rehen SK

更新日期：2016-12-06 00:00:00

abstract：:3D printers that build objects using extruded thermoplastic are quickly becoming commonplace tools in laboratories. We demonstrate that with appropriate handling, these devices are capable of producing sterile components from a non-sterile feedstock of thermoplastic without any treatment after fabrication. The fabrica...

journal_title：PeerJ

authors： Neches RY,Flynn KJ,Zaman L,Tung E,Pudlo N

更新日期：2016-12-01 00:00:00

abstract：:Complete chloroplast genome sequences have been very useful for understanding phylogenetic relationships in angiosperms at the family level and above, but there are currently large gaps in coverage. We report the chloroplast genome for Helwingia himalaica, the first in the distinctive family Helwingiaceae and only the...

journal_title：PeerJ

authors： Yao X,Liu YY,Tan YH,Song Y,Corlett RT

更新日期：2016-11-29 00:00:00

abstract：:C-type cytoplasmic male sterility (CMS-C) is widely utilized for hybrid maize seed production. However, genetic mechanisms underlying the fertility restoration are very complicated. At present, there is a divergence on the number of fertility restorer genes in maize inbred line A619 for CMS-C. To further elucidate the...

journal_title：PeerJ

authors： Yongming L,Zhuofan Z,Yanli L,Chuan L,Jing W,Boxiao D,Bing L,Tao Q,Wenbing Z,Moju C

更新日期：2016-11-22 00:00:00

abstract：BACKGROUND:Cloud forests, characterized by a persistent, frequent or seasonal low-level cloud cover and fragmented distribution, are one of the most threatened habitats, especially in the Neotropics. Tree ferns are among the most conspicuous elements in these forests, and ferns are restricted to regions in which minimu...

journal_title：PeerJ

authors： Sosa V,Ornelas JF,Ramírez-Barahona S,Gándara E

更新日期：2016-11-16 00:00:00

abstract：BACKGROUND:Schotia brachypetala Sond. (Fabaceae) is an endemic tree of Southern Africa whose phytochemistry and pharmacology were slightly studied. The present work aimed at profiling the major phenolics compounds present in the hydro-alcohol extract from S. brachypetala leaves (SBE) using LC/HRESI/MS/MS and NMR and pr...

journal_title：PeerJ

authors： Sobeh M,ElHawary E,Peixoto H,Labib RM,Handoussa H,Swilam N,El-Khatib AH,Sharapov F,Mohamed T,Krstin S,Linscheid MW,Singab AN,Wink M,Ayoub N

更新日期：2016-11-15 00:00:00

abstract：:Pico and nanoplankton communities from the Southwest Atlantic Ocean along the Brazilian Bight are poorly described. The hydrography in this region is dominated by a complex system of layered water masses, which includes the warm and oligotrophic Tropical Water (TW), the cold and nutrient rich South Atlantic Central Wa...

journal_title：PeerJ

authors： Gérikas Ribeiro C,Lopes Dos Santos A,Marie D,Helena Pellizari V,Pereira Brandini F,Vaulot D

更新日期：2016-11-10 00:00:00

abstract：:Cell immobilization is an alternative to microencapsulation for the maintenance of cells in a liquid medium. However, artificial immobilization carriers are expensive and pose a high safety risk. Okara, a food-grade byproduct from soymilk production, is rich in prebiotics. Lactobacilli could provide health enhancing e...

journal_title：PeerJ

authors： Xiudong X,Ying W,Xiaoli L,Ying L,Jianzhong Z

更新日期：2016-11-10 00:00:00

abstract：BACKGROUND:Psilochilus is a poorly studied orchid genus distributed from southern Mexico to south-eastern Brazil. A taxonomic revision of this Neotropical endemic based on morphological data is presented. MATERIAL AND METHODS:Over 170 dried herbarium specimens and flowers preserved in liquid of Psilochilus were analyz...

journal_title：PeerJ

authors： Kolanowska M,Naczk AM,Jaskuła R

更新日期：2016-11-08 00:00:00

abstract：:Annually, half of all plant-derived carbon is added to soil where it is microbially respired to CO2. However, understanding of the microbiology of this process is limited because most culture-independent methods cannot link metabolic processes to the organisms present, and this link to causative agents is necessary to...

journal_title：PeerJ

authors： Butterfield CN,Li Z,Andeer PF,Spaulding S,Thomas BC,Singh A,Hettich RL,Suttle KB,Probst AJ,Tringe SG,Northen T,Pan C,Banfield JF

更新日期：2016-11-08 00:00:00

abstract：:The potential of soils to naturally suppress inherent plant pathogens is an important ecosystem function. Usually, pathogen infection assays are used for estimating the suppressive potential of soils. In natural soils, however, co-occurring pathogens might simultaneously infect plants complicating the estimation of a ...

journal_title：PeerJ

authors： Rall BC,Latz E

更新日期：2016-11-03 00:00:00

abstract：:The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, is one of the most serious citrus pests worldwide due to its role as vector of huanglongbing or citrus greening disease. While some optimal plant species for ACP oviposition and development have been identified, little is known of the influence of host plants ...

journal_title：PeerJ

authors： Paris TM,Allan SA,Hall DG,Hentz MG,Hetesy G,Stansly PA

更新日期：2016-11-03 00:00:00

abstract：:Herbivory and nutrient enrichment are drivers of benthic dynamics of coral reef macroalgae; however, their impact may vary seasonally. In this study we evaluated the effects of herbivore pressure, nutrient availability and potential propagule supply on seasonal recruitment and succession of macroalgal communities on a...

journal_title：PeerJ

authors： Duran A,Collado-Vides L,Burkepile DE

更新日期：2016-11-02 00:00:00

abstract：BACKGROUND:The genotype-phenotype interactions among traits governing feeding preference are of fundamental importance to behavioral genetics and evolutionary biology. The genetic basis of behavioral traits has been explored in different taxa using different approaches. However, the complex nature of the genetic mechan...

journal_title：PeerJ

authors： Cardoso GA,Marinho MA,Monfardini RD,Espin AM,Torres TT

更新日期：2016-10-27 00:00:00

abstract：:Ephemeral rivers act as linear oases in drylands providing key resources to people and wildlife. However, not much is known about these rivers' sensitivities to human activities. We investigated the landscape-level determinants of riparian tree dieback along the Swakop River, a dammed ephemeral river in Namibia, focus...

journal_title：PeerJ

authors： Douglas CM,Mulligan M,Harrison XA,Henschel JR,Pettorelli N,Cowlishaw G

更新日期：2016-10-27 00:00:00

abstract：BACKGROUND:This study examines the biophysical and preclinical pulmonary activity of synthetic lung surfactants containing novel phospholipase-resistant phosphonolipids or synthetic glycerophospholipids combined with Super Mini-B (S-MB) DATK and/or SP-Css ion-lock 1 peptides that replicate the functional biophysics of ...

journal_title：PeerJ

authors： Notter RH,Gupta R,Schwan AL,Wang Z,Shkoor MG,Walther FJ

更新日期：2016-10-27 00:00:00