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https://www.readbyqxmd.com/read/28350473/visible-light-induced-synthesis-of-carbazoles-by-in-situ-formation-of-photosensitizing-intermediate
#1
Tanmay Chatterjee, Geum-Bee Roh, Mahbubul Alam Shoaib, Chang-Heon Suhl, Jun Soo Kim, Cheon-Gyu Cho, Eun Jin Cho
A visible-light-induced synthesis of N-H carbazoles from easily accessible 2,2'-diaminobiaryls in the absence of any external photosensitizer is reported. The process only requires (t)BuONO and natural resources, visible light, and molecular oxygen for the synthesis of N-H carbazoles. Experimental and computational studies support that the in situ formation of a visible-light-absorbing photosensitizing intermediate, benzocinnoline N-imide, is responsible for the activation of triplet molecular oxygen to singlet oxygen that, in turn, promotes the synthesis of carbazole...
March 28, 2017: Organic Letters
https://www.readbyqxmd.com/read/28346980/ecological-intensification-to-mitigate-impacts-of-conventional-intensive-land-use-on-pollinators-and-pollination
#2
REVIEW
Anikó Kovács-Hostyánszki, Anahí Espíndola, Adam J Vanbergen, Josef Settele, Claire Kremen, Lynn V Dicks
Worldwide, human appropriation of ecosystems is disrupting plant-pollinator communities and pollination function through habitat conversion and landscape homogenisation. Conversion to agriculture is destroying and degrading semi-natural ecosystems while conventional land-use intensification (e.g. industrial management of large-scale monocultures with high chemical inputs) homogenises landscape structure and quality. Together, these anthropogenic processes reduce the connectivity of populations and erode floral and nesting resources to undermine pollinator abundance and diversity, and ultimately pollination services...
March 27, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28346895/wheat-genomics-comes-of-age
#3
REVIEW
Cristobal Uauy
Advances in wheat genomics have lagged behind other major cereals (e.g., rice and maize) due to its highly repetitive and large polyploid genome. Recent technological developments in sequencing and assembly methods, however, have largely overcome these barriers. The community now moves to an era centred on functional characterisation of the genome. This includes understanding sequence and structural variation as well as how information is integrated across multiple homoeologous genomes. This understanding promises to uncover variation previously hidden from natural and human selection due to the often observed functional redundancy between homoeologs...
March 24, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28346519/views-of-senior-health-personnel-about-quality-of-emergency-obstetric-care-a-qualitative-study-in-nigeria
#4
Friday Okonofua, Abdullahi Randawa, Rosemary Ogu, Kingsley Agholor, Ola Okike, Rukayat Adeola Abdus-Salam, Mohammed Gana, Eghe Abe, Adetoye Durodola, Hadiza Galadanci
BACKGROUND: Late arrival in hospital by women experiencing pregnancy complications is an important background factor leading to maternal mortality in Nigeria. The use of effective and timely emergency obstetric care determines whether women survive or die, or become near-miss cases. Healthcare managers have the responsibility to deploy resources for implementing emergency obstetric care. OBJECTIVES: To determine the nature of institutional policies and frameworks for managing obstetric complications and reducing maternal deaths in Nigeria...
2017: PloS One
https://www.readbyqxmd.com/read/28345653/temporally-dependent-pollinator-competition-and-facilitation-with-mass-flowering-crops-affects-yield-in-co-blooming-crops
#5
Heather Grab, Eleanor J Blitzer, Bryan Danforth, Greg Loeb, Katja Poveda
One of the greatest challenges in sustainable agricultural production is managing ecosystem services, such as pollination, in ways that maximize crop yields. Most efforts to increase services by wild pollinators focus on management of natural habitats surrounding farms or non-crop habitats within farms. However, mass flowering crops create resource pulses that may be important determinants of pollinator dynamics. Mass bloom attracts pollinators and it is unclear how this affects the pollination and yields of other co-blooming crops...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345261/antibodies-from-plants-for-bionanomaterials
#6
REVIEW
Gueven Edgue, Richard M Twyman, Veronique Beiss, Rainer Fischer, Markus Sack
Antibodies are produced as part of the vertebrate adaptive immune response and are not naturally made by plants. However, antibody DNA sequences can be introduced into plants, and together with laboratory technologies that allow the design of antibodies recognizing any conceivable molecular structure, plants can be used as 'green factories' to produce any antibody at all. The advent of plant-based transient expression systems in particular allows the rapid, convenient, and safe production of antibodies, ranging from laboratory-scale expression to industrial-scale manufacturing...
March 27, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28344767/finding-truth-across-different-data-sources
#7
EDITORIAL
Alison Rein, Lisa A Simpson
The proliferation of new technology platforms and tools is dramatically advancing our ability to capture, integrate and use clinical and other health related data for research and care. Another critical and increasingly common source of data comes directly from patients - often in the form of Patient Reported Outcomes (PRO). As more providers and payers recognize that patient experiences reflect a critical dimension of the value proposition, these data are informing broader strategies to achieve performance improvement and accountability in health systems...
2017: Israel Journal of Health Policy Research
https://www.readbyqxmd.com/read/28344567/does-hunger-contribute-to-socioeconomic-gradients-in-behavior
#8
Daniel Nettle
Recent research has uncovered many examples of socioeconomic gradients in behavior and psychological states. As yet there is no theoretical consensus on the nature of the causal processes that produce these gradients. Here, I present the hunger hypothesis, namely the claim that part of the reason that people of lower socioeconomic position behave and feel as they do is that they are relatively often hungry. The hunger hypothesis applies in particular to impulsivity-hyperactivity, irritability-aggression, anxiety, and persistent narcotic use, all of which have been found to show socioeconomic gradients...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28344106/molecular-phylogenetic-relationships-reveal-contrasting-evolutionary-patterns-in-gorgoniidae-octocorallia-in-the-eastern-pacific
#9
M M Soler-Hurtado, P J López-González, A Machordom
The description and delimitation of species in an evolutionary framework is essential for understanding patterns of biodiversity and distribution, and in the assessment of conservation strategies for natural resources. This study seeks to clarify the evolutionary history and genetic variation within and between closely related octocoral species that are fundamental to benthic marine ecosystems for harbouring a high diversity of associated fauna. For our study system, we focused on members of the Gorgoniidae family in the Eastern Pacific, particularly of the Ecuadorian littoral, a less studied marine ecosystem...
March 24, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28344031/culture-bound-syndromes-of-a-brazilian-amazon-riverine-population-tentative-correspondence-between-traditional-and-western-medicine-terms-and-possible-ethnopharmacological-implications
#10
E Pagani, J de F L Santos, E Rodrigues
ETHNOPHARMACOLOGICAL RELEVANCE: It is not always possible to correlate the "emic" terms to the "etic" ones during ethnopharmacological surveys, especially regarding those related to Culture-Bound Syndromes (CBS). Nevertheless, it is the role of ethnopharmacology to address these correlations, since they are the basis for the understanding of potential bioactives. AIM AND OBJECTIVES: This study reports the clinical manifestations and therapeutic resources used for the treatment of CBS among some riverine inhabitants of Brazilian Amazonia...
March 23, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28343805/the-reported-incidence-and-nature-of-voice-disorders-in-the-private-healthcare-context-of-gauteng
#11
Kayla Fourie, Maeve Richardson, Jeannie van der Linde, Shabnam Abdoola, Renata Mosca
OBJECTIVES: The study aimed to determine the incidence and nature of voice disorders, as reported by ear, nose, and throat specialists (ENTs), in the Gauteng private healthcare context. STUDY DESIGN: This is a cross-sectional survey design. METHODS: The respondents had to be certified ENTs working in the private healthcare context in Gauteng. The survey was sent out electronically to all 94 ENTs, registered with the ENT Society, working in the private healthcare context; thus, no additional requirements had to be met...
March 23, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28343270/magnetic-field-discrimination-learning-and-memory-in-the-yellow-stingray-urobatis-jamaicensis
#12
Kyle C Newton, Stephen M Kajiura
Elasmobranch fishes (sharks, skates, and rays) have been hypothesized to use the geomagnetic field as a cue for orienting and navigating across a wide range of spatial scales. Magnetoreception has been demonstrated in many invertebrate and vertebrate taxa, including elasmobranchs, but this sensory modality and the cognitive abilities of cartilaginous fishes are poorly studied. Wild caught yellow stingrays, Urobatis jamaicensis (N = 8), underwent conditioning to associate a magnetic stimulus with a food reward in order to elicit foraging behaviors...
March 25, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28343006/trouble-on-takeoff-crude-oil-on-feathers-reduces-escape-performance-of-shorebirds
#13
Ivan Maggini, Lisa V Kennedy, Kyle H Elliott, Karen M Dean, Robert MacCurdy, Alexander Macmillan, Chris A Pritsos, Christopher G Guglielmo
The ability to takeoff quickly and accelerate away from predators is crucial to bird survival. Crude oil can disrupt the fine structure and function of feathers, and here we tested for the first time how small amounts of oil on the trailing edges of the wings and tail of Western sandpipers (Calidris mauri) affected takeoff flight performance. In oiled birds, the distance travelled during the first 0.4s after takeoff was reduced by 29%, and takeoff angle was decreased by 10° compared to unoiled birds. Three-axis accelerometry indicated that oiled sandpipers produced less mechanical power output per wingbeat during the initial phase of flight...
March 23, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28342422/synergistic-desalination-of-potash-brine-impacted-groundwater-using-a-dual-adsorbent
#14
Nick P Gibb, James J Dynes, Wonjae Chang
The impact of saline mining effluent has been a significant environmental concern. Natural and modified clay-mineral adsorbents have been receiving increasing attention for salinity reduction of brine-impacted water, especially for natural resource extraction sites and surrounding environments. In this study, a dual-adsorbent treatment based on the sequential application of calcined layered double hydroxide (CLDH) and acid-treated zeolite was developed, evaluated and characterized for the desalination of potash brine-impacted groundwater...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342350/challenges-for-tree-officers-to-enhance-the-provision-of-regulating-ecosystem-services-from-urban-forests
#15
Helen J Davies, Kieron J Doick, Malcolm D Hudson, Kate Schreckenberg
Urbanisation and a changing climate are leading to more frequent and severe flood, heat and air pollution episodes in Britain's cities. Interest in nature-based solutions to these urban problems is growing, with urban forests potentially able to provide a range of regulating ecosystem services such as stormwater attenuation, heat amelioration and air purification. The extent to which these benefits are realized is largely dependent on urban forest management objectives, the availability of funding, and the understanding of ecosystem service concepts within local governments, the primary delivery agents of urban forests...
March 21, 2017: Environmental Research
https://www.readbyqxmd.com/read/28340464/a-review-on-various-electrochemical-techniques-for-heavy-metal-ions-detection-with-different-sensing-platforms
#16
REVIEW
BabanKumar Bansod, Tejinder Kumar, Ritula Thakur, Shakshi Rana, Inderbir Singh
Heavy metal ions are non-biodegradable and contaminate most of the natural resources occurring in the environment including water. Some of the heavy metals including Lead (Pb), Mercury (Hg), Arsenic (As), Chromium (Cr) and Cadmium (Cd) are considered to be highly toxic and hazardous to human health even at trace levels. This leads to the requirement of fast, accurate and reliable techniques for the detection of heavy metal ions. This review presents various electrochemical detection techniques for heavy metal ions those are user friendly, low cost, provides on-site and real time monitoring as compared to other spectroscopic and optical techniques...
March 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28340307/genetic-diversity-analysis-of-asian-clam-corbicula-fluminea-in-the-hongze-lake-based-on-mitochondrial-cytochrome-b-gene
#17
Chuankun Zhu, Jin Li, Songguang Xie, Huaiyu Ding, Zhengjun Pan, Hui Wang, Guoliang Chang
The Asian clam Corbicula fluminea is a small bivalve with high nutritional and medical values. However, natural resources of C. fluminea have declined in many areas of China including the Hongze Lake. In this study, 119 individuals from 10 sites of this lake and 2 outgroups were analyzed using a 456 bp mitochondrial cytochrome b (cytb) gene segment. Totally, 19 polymorphic sites were detected, which defined 16 haplotypes. Polymorphism varied among the 10 populations with those at the water inlet being more polymorphic...
March 24, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28340262/effect-of-photoperiod-on-serum-hormone-concentrations-during-the-annual-reproductive-cycle-in-geese
#18
X Z Zhao, G L Gao, H W Wang, Q Li, K S Zhang, H Zhong, Q G Wang
The poor egg-laying rate of geese hinders the development of the goose industry; therefore, the reproductive performance of geese is an important area of investigation. To evaluate the relationship between photoperiod, reproductive hormones, and reproductive activity during the egg-laying cycle in geese under natural conditions, we collected blood samples from Sichuan white geese and Xupu geese to quantify changes in prolactin (PRL), estradiol (E2), vasoactive intestinal polypeptide (VIP), follicle stimulating hormone (FSH), gonadotropin-inhibitory hormone (GnIH), and luteinizing hormone (LH)...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28338970/woody-plant-ecosystems-under-climate-change-and-air-pollution-response-consistencies-across-zonobiomes
#19
R Matyssek, A R Kozovits, G Wieser, J King, H Rennenberg
Forests store the largest terrestrial pools of carbon (C), helping to stabilize the global climate system, yet are threatened by climate change (CC) and associated air pollution (AP, highlighting ozone (O3) and nitrogen oxides (NOx)). We adopt the perspective that CC-AP drivers and physiological impacts are universal, resulting in consistent stress responses of forest ecosystems across zonobiomes. Evidence supporting this viewpoint is presented from the literature on ecosystem gross/net primary productivity and water cycling...
March 14, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338684/seven-enzymes-create-extraordinary-molecular-complexity-in-an-uncultivated-bacterium
#20
Michael F Freeman, Maximilian J Helf, Agneya Bhushan, Brandon I Morinaka, Jörn Piel
Uncultivated bacteria represent a massive resource of new enzymes and bioactive metabolites, but such bacteria remain functionally enigmatic. Polytheonamides are potent peptide cytotoxins produced by uncultivated bacteria that exist as symbionts in a marine sponge. Outside glycobiology, polytheonamides represent the most heavily post-translationally modified biomolecules that are derived from amino acids. The biosynthesis of polytheonamides involves up to 50 site-specific modifications to create a membrane-spanning β-helical structure...
April 2017: Nature Chemistry
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