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https://www.readbyqxmd.com/read/29224121/high-definition-infrared-thermography-of-ice-nucleation-and-propagation-in-wheat-under-natural-frost-conditions-and-controlled-freezing
#1
David P Livingston, Tan D Tuong, J Paul Murphy, Lawrence V Gusta, Ian Willick, Micheal E Wisniewski
An extremely high resolution infrared camera demonstrated various freezing events in wheat under natural conditions. Many of those events shed light on years of misunderstanding regarding freezing in small grains. Infrared thermography has enhanced our knowledge of ice nucleation and propagation in plants through visualization of the freezing process. The majority of infrared analyses have been conducted under controlled conditions and often on individual organs instead of whole plants. In the present study, high-definition (1280 × 720 pixel resolution) infrared thermography was used under natural conditions to visualize the freezing process of wheat plants during freezing events in 2016 and 2017...
December 9, 2017: Planta
https://www.readbyqxmd.com/read/29223413/predictors-of-pressure-ulcer-risk-in-adult-intensive-care-patients-a-retrospective-case-control-study
#2
Ana Beatriz de Almeida Medeiros, Maria Isabel da Conceição Dias Fernandes, Jéssica Dantas de Sá Tinôco, Marcelly Santos Cossi, Marcos Venicios de Oliveira Lopes, Ana Luisa Brandão de Carvalho Lira
OBJECTIVES: To evaluate the predictive power of risk factors for pressure ulcers in adult intensive care patients. METHOD: A retrospective case-control study was performed utilising a heterogeneous sample group allocated into a case group with pressure ulcers (n=90) and a control group without pressure ulcers (n=90). The analysis explored the predictive power of risk factors for pressure ulcers using a hierarchical logistic regression model. RESULTS: The risk factors that predicted pressure ulcers were friction (OR=5...
December 6, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/29222898/exercise-induced-dehydration-status-and-skinfold-compressibility-in-athletes-an-intervention-study
#3
Daniela Araújo, Vitor Hugo Teixeira, Pedro Carvalho, Teresa F Amaral
BACKGROUND AND OBJECTIVES: Skinfold thickness assessment is a widely recognized technique for the estimation of body adiposity and fat free mass. This method assumes that skinfolds' compressibility is constant but there are some factors that could influence its compressibility. This study aims to evaluate whether the skinfolds' compressibility is influenced by hydration status. METHODS AND STUDY DESIGN: An intervention study was conducted in a sample of 22 adult male amateur soccer players, who took part in a 90min simulated soccer match...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29222611/kiwifruit-svp2-controls-developmental-and-drought-stress-pathways
#4
Rongmei Wu, Tianchi Wang, Ben A W Warren, Susan J Thomson, Andrew C Allan, Richard C Macknight, Erika Varkonyi-Gasic
Genome-wide targets of Actinidia chinensis SVP2 confirm roles in ABA- and dehydration-mediated growth repression and reveal a conservation in mechanism of action between SVP genes of taxonomically distant Arabidopsis and a woody perennial kiwifruit. The molecular mechanisms underlying growth and dormancy in woody perennials are largely unknown. In Arabidopsis, the MADS-box transcription factor SHORT VEGETATIVE PHASE (SVP) plays a key role in the progression from vegetative to floral development, and in woody perennials SVP-like genes are also proposed to be involved in controlling dormancy...
December 8, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29220736/arsenic-stress-effects-on-root-water-absorption-in-soybean-plants-physiological-and-morphological-aspects
#5
Mariana E Vezza, Analía Llanes, Claudia Travaglia, Elizabeth Agostini, Melina A Talano
Soybean (Glycine max L.) is often cultivated in areas contaminated with arsenic (As), which negatively affects plant growth and reduces crop yield. The deleterious effects may be due, at least in part, to disturbances in the water status, as was reported for some plants exposed to heavy metals. However, to our knowledge, these mechanisms have not been studied in depth in soybean plants exposed to As. The aim of the present work was to analyze possible changes in water relations and the responses developed in soybean plants under arsenate (AsV) and arsenite (AsIII) stress...
December 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29217572/renewable-acrylonitrile-production
#6
Eric M Karp, Todd R Eaton, Violeta Sànchez I Nogué, Vassili Vorotnikov, Mary J Biddy, Eric C D Tan, David G Brandner, Robin M Cywar, Rongming Liu, Lorenz P Manker, William E Michener, Michelle Gilhespy, Zinovia Skoufa, Michael J Watson, O Stanley Fruchey, Derek R Vardon, Ryan T Gill, Adam D Bratis, Gregg T Beckham
Acrylonitrile (ACN) is a petroleum-derived compound used in resins, polymers, acrylics, and carbon fiber. We present a process for renewable ACN production using 3-hydroxypropionic acid (3-HP), which can be produced microbially from sugars. The process achieves ACN molar yields exceeding 90% from ethyl 3-hydroxypropanoate (ethyl 3-HP) via dehydration and nitrilation with ammonia over an inexpensive titanium dioxide solid acid catalyst. We further describe an integrated process modeled at scale that is based on this chemistry and achieves near-quantitative ACN yields (98 ± 2%) from ethyl acrylate...
December 8, 2017: Science
https://www.readbyqxmd.com/read/29217107/the-underlying-physiological-basis-of-the-desert-rodent-meriones-shawi-s-survival-to-prolonged-water-deprivation-central-vasopressin-regulation-on-peripheral-kidney-water-channels-aqps-2
#7
A Elgot, O El Hiba, M Belkouch, H Gamrani
Meriones shawi (M. shawi) is a particular semi-desert rodent known by its resistance to long periods of thirst. The aim of the present investigation is to clarify the underlying mechanisms allowing M. shawi to resist to hard conditions of dehydration. For this reason we used two different approaches: i) a morphometric study, which consists in measuring the effect of dehydration on body and kidneys weights as well as the report kidney weight/body weight, ii) By immunohistochemistry, we proceed to study the effect of dehydration on the immunoreactivity of central vasopressin (AVP) and the kidney aquaporin-2 (AQP-2) which is a channel protein that allows water to permeate across cell membranes...
December 4, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29216600/ethylene-formation-by-dehydration-of-ethanol-over-medium-pore-zeolites
#8
Kinga Gołąbek, Karolina A Tarach, Urszula Filek, Kinga Góra-Marek
In this work, the role of pore arrangement of 10-ring zeolites ZSM-5, TNU-9 and IM-5 on their catalytic properties in ethanol transformation were investigated. Among all the studied catalysts, the zeolite IM-5, characterized by limited 3-dimensionality, presented the highest conversion of ethanol and the highest yields of diethyl ether (DEE) and ethylene. The least active and selective to ethylene and C3+ products was zeolite TNU-9 with the largest cavities formed on the intersection of 10-ring channels. The catalysts varied, however, in lifetime, and their deactivation followed the order: IM-5>TNU-9>ZSM-5...
November 23, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29215474/assessment-of-ileostomy-output-using-telemedicine-a-feasibility-trial
#9
Brian K Bednarski, Rebecca S Slack, Matthew Katz, Y Nancy You, John Papadopolous, Miguel A Rodriguez-Bigas, John M Skibber, Surena F Matin, George J Chang
BACKGROUND: Ileostomies are a routine part of the care of patients with rectal cancer, but are associated with significant risk for dehydration, readmission, and acute kidney injury. Telemedicine has proven beneficial in decreasing readmission in chronic medical illnesses, but its utility in patients with an ileostomy is not well studied. OBJECTIVE: The purpose of this study was to evaluate the feasibility of televideoconferencing in the assessment of ileostomy output...
January 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29214999/engineering-an-aldehyde-dehydrogenase-toward-its-substrates-3-hydroxypropanal-and-nad-for-enhancing-the-production-of-3-hydroxypropionic-acid
#10
Ye Seop Park, Un Jong Choi, Nguyen Hoai Nam, Sang Jin Choi, Abdul Nasir, Sun-Gu Lee, Kyung Jin Kim, Gyoo Yeol Jung, Sangdun Choi, Jeung Yeop Shim, Sunghoon Park, Tae Hyeon Yoo
3-Hydroxypropionic acid (3-HP) can be produced via the biological route involving two enzymatic reactions: dehydration of glycerol to 3-hydroxypropanal (3-HPA) and then oxidation to 3-HP. However, commercial production of 3-HP using recombinant microorganisms has been hampered with several problems, some of which are associated with the toxicity of 3-HPA and the efficiency of NAD+ regeneration. We engineered α-ketoglutaric semialdehyde dehydrogenase (KGSADH) from Azospirillum brasilense for the second reaction to address these issues...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29214049/latent-autoimmune-diabetes-of-adulthood-case-report
#11
Cristen P Page, Brian Fitzgerald, Emily M Hawes
Background: Primary care clinicians will see a higher incidence of type 2 diabetes in adult patients, and the diagnosis and management of an initial presentation of type 1 diabetes can pose challenges to clinicians who see it less frequently. Symptoms of hyperglycemia and risk of ketoacidosis may be missed. Further, endocrine autoimmune disease can run together in patients and families. Case presentation: A 49-year-old Caucasian female with history of pituitary adenoma and Graves' disease with history of thyroid ablation presented in the outpatient setting due to hand tingling of her right middle finger that was worse in the mornings and improved throughout the day...
2017: Clinical Diabetes and Endocrinology
https://www.readbyqxmd.com/read/29210920/safety-of-appetite-manipulation-in-children-with-feeding-disorders-admitted-to-an-inpatient-feeding-program
#12
Alyssa S Pollow, Catherine A Karls, Mary Witzlib, Richard J Noel, Praveen S Goday, Alan H Silverman
OBJECTIVES: Appetite manipulation can be effective in weaning children off gastrostomy tube (G-tube) feeding dependence but can cause dehydration, hypoglycemia and ketone body production, which is anorexigenic. Since the safety of this approach has not been described, our aim was to describe adverse events observed when weaning children from G-tube dependence using our appetite manipulation protocol. METHODS: This was a retrospective study of prospectively collected data of patients who completed our inpatient tube-weaning protocol...
November 28, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29209436/the-potential-relationship-between-flammer-and-sj%C3%A3-gren-syndromes-the-chime-of-dysfunction
#13
REVIEW
Babak Baban, Olga Golubnitschaja
Flammer syndrome (FS) is a term to blanket a cluster of vascular and nonvascular signs and symptoms linked to primary vascular dysregulation (PVD), increased sensitivity to various stimuli (stress, drugs, etc.) and altered sense regulation such as pain, smell and thirst perception. On one hand, disruption of blood barrier and homeostasis of the body are the main targets of vascular irregularity. Inflammation and immune disorders including autoimmunity are considered as a consequence of the abnormal vascular regulation processes...
December 2017: EPMA Journal
https://www.readbyqxmd.com/read/29208215/plasma-potassium-concentrations-in-neonatal-diarrhoeic-calves-are-correlated-with-serum-aldosterone-concentrations-but-not-with-insulin-concentrations
#14
Florian M Trefz, Ingrid Lorenz
Hyperkalaemia is a clinically relevant electrolyte imbalance in neonatal diarrhoeic calves which was previously associated with severe dehydration and acidaemia. The present study assessed the association of plasma potassium (cK) with serum aldosterone and insulin concentrations, since these hormones are involved in the regulation of potassium homeostasis. Serum aldosterone (rs=0.62), but not insulin concentrations (rs=0.22) were closely correlated to cK in 123 hospitalised neonatal diarrhoeic calves. Median values for serum aldosterone concentrations in 38 hyperkalaemic calves (cK>5...
December 2017: Veterinary Journal
https://www.readbyqxmd.com/read/29207520/plants-of-the-genus-zingiber-as-a-source-of-bioactive-phytochemicals-from-tradition-to-pharmacy
#15
REVIEW
Mehdi Sharifi-Rad, Elena Maria Varoni, Bahare Salehi, Javad Sharifi-Rad, Karl R Matthews, Seyed Abdulmajid Ayatollahi, Farzad Kobarfard, Salam A Ibrahim, Dima Mnayer, Zainul Amiruddin Zakaria, Majid Sharifi-Rad, Zubaida Yousaf, Marcello Iriti, Adriana Basile, Daniela Rigano
Plants of the genus Zingiber (Family Zingiberaceae) are widely used throughout the world as food and medicinal plants. They represent very popular herbal remedies in various traditional healing systems; in particular, rhizome of Zingiber spp. plants has a long history of ethnobotanical uses because of a plethora of curative properties. Antimicrobial activity of rhizome essential oil has been extensively confirmed in vitro and attributed to its chemical components, mainly consisting of monoterpene and sesquiterpene hydrocarbons such as α-zingiberene, ar-curcumene, β-bisabolene and β-sesquiphellandrene...
December 4, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29207206/spontaneous-covalent-self-assembly-of-the-azoarcus-ribozyme-from-five-fragments
#16
Tharuka S Jayathilaka, Niles Lehman
Spontaneous covalent assembly of short RNA fragments has been proposed as a plausible prebiotically relevant pathway to a self-reproducing system. We had previously shown that the Azoarcus group I intron could self-assemble from four RNA fragments. Here, we extend this fragmentation to five RNAs that average <40 nucleotides in length. We optimize this reaction and show that a dehydration-rehydration sequence is the most effective means to date to shift the self-assembly equilibrium from reactants to products...
December 5, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29206119/preparation-and-characterization-of-two-new-cuii-supramolecular-coordination-polymers-incorporating-sulfobenzoate-and-flexible-heterocyclic-ligands
#17
Xin Chu, Kou Lin Zhang
The assembly of CuII with the multifunctional ligand 2-amino-4-sulfobenzoic acid (H2asba) in the presence of the auxiliary flexible ligands 1,4-bis(triazol-1-ylmethyl)benzene (bbtz) and 1,4-bis(imidazol-1-ylmethyl)benzene (bix) under ambient conditions resulted in two new supramolecular coordination polymers, namely poly[[(3-amino-4-carboxybenzenesulfonato-κO)aquabis[μ2-1,4-bis(triazol-1-ylmethyl)benzene-κ2N4:N4']copper(II)] 3-amino-4-carboxybenzenesulfonate tetrahydrate], {[Cu(C7H6NO5S)(C12H12N6)2(H2O)](C7H6NO5S)·4H2O}n, (1), and poly[[bis(μ2-2-amino-4-sulfonatobenzoato-κ3O1:N,O1')tetraaqua[μ2-1,4-bis(triazol-1-ylmethyl)benzene-κ2N4:N4']dicopper(II)] tetrahydrate], {[Cu2(C7H5NO5S)2(C14H14N4)(H2O)4]·4H2O}n, (2)...
December 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/29205196/speciation-clinical-profile-antibiotic-resistance-in-aeromonas-species-isolated-from-cholera-like-illnesses-in-a-tertiary-care-hospital-in-north-india
#18
Balvinder Mohan, Nandini Sethuraman, Ritu Verma, Neelam Taneja
BACKGROUND & OBJECTIVES: Aeromonas species have been reported to cause various illnesses in humans such as wound infections, septicaemia, peritonitis and pneumonia. Their role in causation of cholera-like illness is also being increasingly recognized. This retrospective study was done to know the presence of Aeromonas as a cause of acute diarrhoea in a tertiary care hospital and to find the common species of Aeromonas causing diarrhoea and their antibiotic susceptibility patterns. METHODS: Fifty isolates of Aeromonas were obtained over a period of 15 yr from 2000 to 2014 from patients of suspected acute gastroenteritis resembling cholera...
July 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29204147/early-flowering-as-a-drought-escape-mechanism-in-plants-how-can-it-aid-wheat-production
#19
REVIEW
Yuri Shavrukov, Akhylbek Kurishbayev, Satyvaldy Jatayev, Vladimir Shvidchenko, Lyudmila Zotova, Francois Koekemoer, Stephan de Groot, Kathleen Soole, Peter Langridge
Drought escape (DE) is a classical adaptive mechanism which involves rapid plant development to enable the completion of the full life-cycle prior to a coming drought event. This strategy is widely used in populations of native plants, and is also applicable to cereal crops such as wheat. Early flowering time and a shorter vegetative phase can be very important for wheat production in conditions of terminal drought since this can minimize exposure to dehydration during the sensitive flowering and post-anthesis grain filling periods...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29203777/constraints-from-the-dehydration-of-antigorite-on-high-conductivity-anomalies-in-subduction-zones
#20
Duojun Wang, Xiaowei Liu, Tao Liu, Kewei Shen, David O Welch, Baosheng Li
Regions with high electrical conductivities in subduction zones have attracted a great deal of attention. Determining the exact origin of these anomalies could provide critical information about the water storage and cycling processes during subduction. Antigorite is the most important hydrous mineral within deep subduction zones. The dehydration of antigorite is believed to cause high-conductivity anomalies. To date, the effects of dehydration on the electrical conductivity of antigorite remain poorly understood...
December 4, 2017: Scientific Reports
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