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Variations of electric potential in the xylem of tree trunks associated with water content rhythms.

J Exp Bot 2021 02;72(4):1321-1335

No. 95 Fengya Road, Xiqing District, Tianjin, China.

Instantaneous electrical responses in plants have been widely studied, but the mechanism of spontaneous, periodic electric potential alternations in the xylem of tree trunks remains controversial. The generation of the electric potential can be explained by the electrode potential, which depends on ion concentrations near electrodes. However, several different hypotheses about its periodic variations have been proposed, including streaming potential, ion diffusion, charge transport, and oxygen turnover. Read More

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February 2021

Comparative bioefficacy of and chitinase against in tea ( (L.) O.Kuntze.

Physiol Mol Biol Plants 2020 Oct 25;26(10):2053-2060. Epub 2020 Sep 25.

Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, Potheri, Kattankulathur, Chengalpattu District, Tamilnadu 603 203 India.

Tea ( (L.) O.Kuntze) is an industry-oriented economical crop in India. Read More

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October 2020

Variable Fall Climate Conditions on Carbon Assimilation and Spring Phenology of Young Peach Trees.

Plants (Basel) 2020 Oct 13;9(10). Epub 2020 Oct 13.

Department of Plant and Environmental Sciences, Clemson University, 105 Collings Street BRC 218, Clemson, SC 29634, USA.

Variable fall temperature and moisture conditions may alter leaf senescence of deciduous fruit trees, influencing carbon assimilation before dormancy and phenology the following spring. This study explored gas exchange of young peach trees ( (L.) Batsch) when senescence proceeded normally or was delayed during the fall under two soil moisture treatments: Well-irrigated trees or water deficit. Read More

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October 2020

A nappies management by-product for the treatment of uranium-contaminated waters.

J Hazard Mater 2021 02 2;404(Pt A):124147. Epub 2020 Oct 2.

Laboratory of Radioanalytical and Environmental Chemistry, Department of Chemistry, University of Cyprus, P.O. Box 20537, Cy-1678 Nicosia, Cyprus.

The direct disposal of municipal solid waste such as nappies to the environment may create serious pollution problems. Based on the circular economy and waste management concepts, the conversion of nappies and/or their ingredients (such as super absorbent polymer (SAP)) to high added value products is of great importance. In this work, a modified SAP (MSAP) was examined as an adsorbent for treatment of contaminated waters and uranium recovery. Read More

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February 2021

Hyperbranch-Crosslinked S-SEBS Block Copolymer Membranes for Desalination by Pervaporation.

Membranes (Basel) 2020 Oct 10;10(10). Epub 2020 Oct 10.

CSIRO Manufacturing, Private bag 10, Clayton South MDC, VIC 3169, Australia.

Sulfonated aromatic polymer (SAP) featuring hydrophilic nanochannels for water transport is a promising membrane material for desalination. SAPs with a high sulfonation degree favor water transport but suffer from reduced mechanical strength and membrane swelling. In this work, a hyperbranched polyester, H302, was introduced to crosslink a sulfonated styrene-ethylene/butylene-styrene (S-SEBS) copolymer membrane. Read More

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October 2020

Targeted hypothermia versus targeted normothermia after out-of-hospital cardiac arrest: a statistical analysis plan.

Trials 2020 Oct 7;21(1):831. Epub 2020 Oct 7.

Department of Clinical Sciences Lund, Anesthesia & Intensive Care, Lund University, Helsingborg Hospital, Lund, Sweden.

Background: To date, targeted temperature management (TTM) is the only neuroprotective intervention after resuscitation from cardiac arrest that is recommended by guidelines. The evidence on the effects of TTM is unclear.

Methods/design: The Targeted Hypothermia Versus Targeted Normothermia After Out-of-hospital Cardiac Arrest (TTM2) trial is an international, multicentre, parallel group, investigator-initiated, randomised, superiority trial in which TTM with a target temperature of 33 °C after cardiac arrest will be compared with a strategy to maintain normothermia and active treatment of fever (≥ 37. Read More

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October 2020

Ecosystem transpiration and evaporation: Insights from three water flux partitioning methods across FLUXNET sites.

Glob Chang Biol 2020 Dec 6;26(12):6916-6930. Epub 2020 Oct 6.

Institute for Agricultural and Forest Systems in the Mediterranean (ISAFoM), National Research Council of Italy (CNR), Ercolano, Italy.

We apply and compare three widely applicable methods for estimating ecosystem transpiration (T) from eddy covariance (EC) data across 251 FLUXNET sites globally. All three methods are based on the coupled water and carbon relationship, but they differ in assumptions and parameterizations. Intercomparison of the three daily T estimates shows high correlation among methods (R between . Read More

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December 2020

Influence of Environmental Factors on the Swelling Capacities of Superabsorbent Polymers Used in Concrete.

Polymers (Basel) 2020 Sep 24;12(10). Epub 2020 Sep 24.

Institute of Building Materials Research, RWTH Aachen University, 52062 Aachen, Germany.

Superabsorbent polymers (SAP) are of major interest as materials to control the cement hydration process. The swelling behavior of the SAPs significantly influences the performance of the resulting concrete by slowly releasing polymer-bound water in order to maintain a consistent / value. A round-robin test conducted by the RILEM Technical Committee 260-RSC showed that the same batch of polymer can lead to large deviations in concrete performance and this was assumed to originate in different storage conditions of the SAP. Read More

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September 2020

Hydrophilic modification of polycarbonate surface with surface alkoxylation pretreatment for efficient separation of polycarbonate and polystyrene by froth flotation.

Waste Manag 2020 Dec 24;118:471-480. Epub 2020 Sep 24.

College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. Electronic address:

Waste polystyrene (PS) and polycarbonate (PC) are crucial components arising from mixtures of plastic products, whose recycling is significantly limited by separation efficiency. In this work, to assist the flotation separation of PC and PS, we proposed a novel modification technology of surface alkoxylation pretreatment (SAP) where PC surface reacted with glycerol and urea. The SAP could selectively transform the hydrophobic PC into hydrophilic plastic, while the PS remained its hydrophobic surface owing to the exclusion from SAP process. Read More

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December 2020

First Report of Bacterial Wilt Disease of Tomato, Pepper and Gboma Caused by the Species Complex in Togo.

Plant Dis 2020 Sep 18. Epub 2020 Sep 18.

University of Florida , North Florida Research and Education Center,, 155 Research Road, Quincy, Florida, United States, 32351;

Tomato (Solanum lycopersicum), pepper (Capsicum annum), and gboma (Solanum macrocarpon) are major vegetables in Togo, with many people depending on these crops for their livelihood. In December 2018, during the dry season with temperatures between 21°C to 35°C, tomato ('Petomech'), pepper ('Gboyebesse') and gboma (local landrace) showing wilt symptoms without foliar yellowing were collected from two locations, Tchouloum and CECO-AGRO sites in the Sotouboua Prefecture of Togo, ~300 km from the capital city of Lome. Disease incidence ranged between 10% to 50% in multiple fields. Read More

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September 2020

Physiological, biochemical and genetic responses of Caucasian tea ( (L.) Kuntze) genotypes under cold and frost stress.

PeerJ 2020 28;8:e9787. Epub 2020 Aug 28.

Federal Research Centre the "Subtropical Scientific Centre of the Russian Academy of Sciences", Sochi, Russia.

Background: Cold and frost are two serious factors limiting the yield of many crops worldwide, including the tea plant (L.) Kuntze). The acclimatization of tea plant from tropical to temperate climate regions resulted in unique germplasm in the North-Western Caucasus with extremely frost-tolerant genotypes. Read More

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Growing-season warming and winter soil freeze/thaw cycles increase transpiration in a northern hardwood forest.

Ecology 2020 11 22;101(11):e03173. Epub 2020 Sep 22.

Department of Biology, Boston University, 5 Cummington Mall, Boston, Massachusetts, 02215, USA.

Climate models project higher growing-season temperatures and a decline in the depth and duration of winter snowpack throughout many north temperate ecosystems over the next century. A smaller snowpack is projected to induce more frequent soil freeze/thaw cycles in winter in northern hardwood forests of the northeastern United States. We measured the combined effects of warmer growing-season soil temperatures and increased winter freeze/thaw cycles on rates of leaf-level photosynthesis and transpiration (sap flow) of red maple (Acer rubrum) trees in a northern hardwood forest at the Climate Change Across Seasons Experiment at Hubbard Brook Experimental Forest in New Hampshire. Read More

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November 2020

Sap flow of Amorpha fruticosa: implications of water use strategy in a semiarid system with secondary salinization.

Sci Rep 2020 08 11;10(1):13504. Epub 2020 Aug 11.

College of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, People's Republic of China.

A. fruticosa (Amorpha fruticosa L.) is widely used for revegetation in semiarid lands that undergo secondary salinization. Read More

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Root collar rot, a new lethal disease on caused by in Brazil.

Plant Dis 2020 Aug 5. Epub 2020 Aug 5.

Universidade Federal de Viçosa, 28120, Departamento de Bioquímica e Biologia Molecular, Vicosa, MG, Brazil;

L.f., known as teak, is one of the most valuable tropical hardwood species that has been extensively planted in tropical zones, covering about 6,8 million hectares (Kollert and Kleine 2017). Read More

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Small copepods of the deep South Adriatic Pit: diversity, seasonal and multi-annual dynamics, and implications from the regional hydrography.

Environ Monit Assess 2020 Jul 27;192(8):545. Epub 2020 Jul 27.

Institute of Oceanography and Fisheries Split, Ivana Meštrovića 63, 21000, Split, Croatia.

In order to expand the fragmentary knowledge on the interactions between the environment and copepod distribution in the deep offshore Adriatic Sea, microcopepod assemblages were investigated during 31 cruises in the 1200-m deep central part of the South Adriatic Pit (SAP), from May 1998 to December 2009. Samples were collected in 8 depth layers, using a 53-μm mesh Nansen net equipped with a closing system. The taxonomic composition and vertical and temporal distributions of copepod abundances were analyzed, considering naupliar stages for all species combined, total calanoid copepodites, copepodite stages and adults separately for oithonids and oncaeids, and all post-naupliar stages combined of harpacticoids and mormonilloids. Read More

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Space Environmental Chamber for Planetary Studies.

Sensors (Basel) 2020 Jul 18;20(14). Epub 2020 Jul 18.

Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, 97187 Luleå, Sweden.

We describe a versatile simulation chamber that operates under representative space conditions (pressures from < 10 mbar to ambient and temperatures from 163 to 423 K), the SpaceQ chamber. This chamber allows to test instrumentation, procedures, and materials and evaluate their performance when exposed to outgassing, thermal vacuum, low temperatures, baking, dry heat microbial reduction (DHMR) sterilization protocols, and water. The SpaceQ is a cubical stainless-steel chamber of 27,000 cm with a door of aluminum. Read More

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Infrared photovoltaic detector based on p-GeTe/n-Si heterojunction.

Nanoscale Res Lett 2020 Jun 29;15(1):138. Epub 2020 Jun 29.

College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK.

GeTe is an important narrow bandgap semiconductor material and has found application in the fields of phase change storage as well as spintronics devices. However, it has not been studied for application in the field of infrared photovoltaic detectors working at room temperature. Herein, GeTe nanofilms were grown by magnetron sputtering technique and characterized to investigate its physical, electrical, and optical properties. Read More

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Biot-Granier Sensor: A Novel Strategy to Measuring Sap Flow in Trees.

Sensors (Basel) 2020 Jun 22;20(12). Epub 2020 Jun 22.

Instituto Nacional de Investigação Agrária e Veterinária, 2565-191 Dois Portos, Portugal.

The Biot-Granier (Gbt) is a new thermal dissipation-based sap flow measurement methodology, comprising sensors, data management and automatic data processing. It relies on the conventional Granier (Gcv) methodology upgraded with a modified Granier sensor set, as well as on an algorithm to measure the absolute temperatures in the two observation points and perform the Biot number approach. The work described herein addresses the construction details of the Gbt sensors and the characterization of the overall performance of the Gbt method after comparison with a commercial sap flow sensor and independent data (i. Read More

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[Modeling water consumption of Populus bolleana by artificial neural network based on fuzzy rules].

Ying Yong Sheng Tai Xue Bao 2020 May;31(5):1525-1534

College of Recourses and Environmental Science, China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Regions, Ningxia University, Yinchuan 750021, China.

To explore the water consumption characteristics of trees, the thermal dissipation probe technology was used to monitor sap flow of Populus bolleana in east sandy land of Yellow River, from July to November in 2017. Microclimate variables were monitored. We analyzed the diurnal and seasonal variations of water consumption, and proposed the models for water consumption with back propagation neural network (BPNN) and Elman neural network (ENN) based on fuzzy rules. Read More

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[Adaptability of Granier empirical formula in sap flow measurement of Populus tomentosa based on whole tree weighing method].

Ying Yong Sheng Tai Xue Bao 2020 May;31(5):1518-1524

College of Forestry, Hebei Agricultural University, Baoding 071000, Hebei, China.

We evaluated the adaptability of Granier's empirical formula in the measurement of trunk sap flow in Populus tomentosa. The thermal diffusion probe method (TDP) was used to mea-sure sap flow rate, and the whole tree weighing was simultaneously measured for each tree. We compared results from the Granier empirical formula with that from the whole tree weighing to find out whether Granier formula had any error in measuring the trunk sap flow of P. Read More

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Enhanced catalytic activity of P1 protease by modulation with nanoactivator.

Heliyon 2020 Jun 4;6(6):e04053. Epub 2020 Jun 4.

School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra, India.

In the developing area of modern nanobiotechnology, the research is being focused on enhancement of catalytic performance in terms of efficiency and stability of enzymes to fulfill the industrial demand. In the context of this interdisciplinary era, we isolated and identified alkaline protease producer P1 by polyphasic approach and then followed one variable at a time approach to optimize protease production from P1. The modified components of fermentation medium (g/L) were wheat bran 10, soybean flour 10, yeast extract 5, NaCl 10, KHPO 1, KHPO 1 and MgSO·7HO 0. Read More

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High temperatures promote the uptake of hydrophobic pollutants by altered gene expression levels of major latex-like proteins.

J Pestic Sci 2020 May;45(2):75-80

Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan.

Cucurbitaceae family members are accumulators of hydrophobic pollutants. Such pollutants have been detected in cucurbits at levels above the maximum residue limit. Since major latex-like proteins (MLPs) are involved in hydrophobic pollutant uptake, changes in expression can increase or decrease contamination. Read More

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Data Brief 2020 Jun 29;30:105646. Epub 2020 Apr 29.

Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, 2480 Koppang, Norway.

Free-ranging brown bears () were snared and subsequently darted with a combination of xylazine-ketamine in Croatia (n = 5) or darted from a helicopter with a combination of medetomidine-tiletamine-zolazepam in Scandinavia (n = 20). Three adults and one yearling (1 year old) bear were captured in Croatia, with one adult being captured twice. The Scandinavian bears were divided into Group A (yearlings, n = 7) and Group B (subadults, n = 2 and adults, n = 11). Read More

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Pharmacokinetics and pharmacodynamics of hydromorphone hydrochloride in healthy horses.

Vet Anaesth Analg 2020 Jul 11;47(4):509-517. Epub 2020 Apr 11.

Department of Molecular Biosciences, University of California Davis School of Veterinary Medicine, Davis, CA, USA.

Objectives: To determine the physiologic and behavioral effects and pharmacokinetic profile of hydromorphone administered intravenously (IV) to horses.

Study Design: Prospective, randomized, crossover study.

Animals: A group of six adult healthy horses weighing 585. Read More

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Processing of coconut sap into sugar syrup using rotary evaporation, microwave, and open-heat evaporation techniques.

J Sci Food Agric 2020 Aug 20;100(10):4012-4019. Epub 2020 May 20.

Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia.

Background: Coconut sugar has a caramel color with a taste like brown sugar. It is commonly used as natural sweetener. However, coconut sugar has been produced from coconut sap using a traditional method that involves heating the sap at high temperature (>100 °C) in an open pan for a long period (3-5 h). Read More

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Stem emissions of monoterpenes, acetaldehyde and methanol from Scots pine (Pinus sylvestris L.) affected by tree-water relations and cambial growth.

Plant Cell Environ 2020 07 28;43(7):1751-1765. Epub 2020 May 28.

Institute for Atmospheric and Earth System Research/Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland.

Tree stems are an overlooked source of volatile organic compounds (VOCs). Their contribution to ecosystem processes and total VOC fluxes is not well studied, and assessing it requires better understanding of stem emission dynamics and their driving processes. To gain more mechanistic insight into stem emission patterns, we measured monoterpene, methanol and acetaldehyde emissions from the stems of mature Scots pines (Pinus sylvestris L. Read More

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Geometry-induced nonequilibrium phase transition in sandpiles.

Phys Rev E 2020 Mar;101(3-1):032116

ESPCI, CNRS UMR 7636 - Laboratoire PMMH, F-75005 Paris, France.

We study the sandpile model on three-dimensional spanning Ising clusters with the temperature T treated as the control parameter. By analyzing the three-dimensional avalanches and their two-dimensional projections (which show scale-invariant behavior for all temperatures), we uncover two universality classes with different exponents (an ordinary BTW class, and SOC_{T=∞}), along with a tricritical point (at T_{c}, the critical temperature of the host) between them. The transition between these two criticalities is induced by the transition in the support. Read More

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Facile coconut inflorescence sap mediated synthesis of silver nanoparticles and its diverse antimicrobial and cytotoxic properties.

Mater Sci Eng C Mater Biol Appl 2020 Jun 10;111:110834. Epub 2020 Mar 10.

ICAR-Central Plantation Crops Research Institute, Kasaragod 671 124, Kerala, India.

Green synthesis of nanoparticles (NPs) involves the use of diverse extracts of biological origin as substrates to synthesize NPs and can overcome the hazards associated with chemical methods. Coconut inflorescence sap, which is unfermented phloem sap obtained by tapping of coconut inflorescence, is a rich source of sugars and secondary metabolites. In this study, coconut inflorescence sap was used to synthesize silver NPs (AgNPs). Read More

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Temperature-dependent development of Omosita colon at constant temperature and its implication for PMI estimation.

J Forensic Leg Med 2020 May 28;72:101946. Epub 2020 Mar 28.

Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou, China. Electronic address:

Omosita colon (Linnaeus, 1758) (Coleoptera: Nitidulidae) is a species widely distributed in the Holarctic that usually appears during more advanced stages of decay. It is one of the species found on highly decomposed remains. Although O. Read More

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The antimicrobial peptide MPX kills Actinobacillus pleuropneumoniae and reduces its pathogenicity in mice.

Vet Microbiol 2020 Apr 3;243:108634. Epub 2020 Mar 3.

College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China. Electronic address:

Actinobacillus pleuropneumoniae is the causative agent of highly contagious and fatal respiratory infections, causing substantial economic losses to the global pig industry. Due to increased antibiotic resistance, there is an urgent need to find new antibiotic alternatives for treating A. pleuropneumoniae infections. Read More

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