Acupuncture and traditional Chinese veterinary medicine for treatment of a mare with rectal paralysis          下载免费PDF全文

M. M. Sleeper  K. Fishman  R. J. MacKay  M. Brown  A. G. Bauck  H. Xie 《Equine Veterinary Education》2018,30(9):460-463

An 8‐year‐old Appaloosa mare with rectal paralysis due to a cosmetic ethanol ‘tail block’ was treated with traditional Chinese veterinary medicine treatments including acupuncture and herbal medicine. Her rectal and tail tone gradually improved after the treatment. At 4 months after initial presentation, the mare was able to produce faecal piles on a regular basis, and manual evacuations were no longer needed. Significant improvement was within 30 days of beginning treatment. At 8 months, the owner indicated that the mare had normal defaecation, was able to swish the tail from side to side and lift the tail to urinate, and had no evidence of straining to defaecate or colic.  相似文献   

Constructing sustained‐release herbicide formulations based on poly‐3‐hydroxybutyrate and natural materials as a degradable matrix     

Evgeniy G Kiselev  Anatoly N Boyandin  Natalia O Zhila  Svetlana V Prudnikova  Anna A Shumilova  Sergey V Baranovskiy  Ekaterina I Shishatskaya  Sabu Thomas  Tatiana G Volova 《Pest management science》2020,76(5):1772-1785

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Emamectin,a novel insecticide for controlling field crop pests     

Ishaaya I  Kontsedalov S  Horowitz AR 《Pest management science》2002,58(11):1091-1095

Emamectin is a macrocyclic lactone insecticide with low toxicity to non-target organisms and the environment, and is considered an important component in pest-management programmes for controlling field crop pests. It is a powerful compound for controlling the cotton bollworm Helicoverpa armigera (Hübner). A spray concentration of 25 mg AI litre-1 in a cotton field resulted in over 90% suppression of H armigera larvae up to day 28 after treatment, while similar mortality of the Egyptian cotton leafworm Spodoptera littoralis Boisduval, under the same conditions, was maintained for 3 days only. Emamectin is a potent compound for controlling the western flower thrips Frankliniella occidentalis (Pergande) under both laboratory and field conditions and its activity on adults was over 10-fold greater than that of abamectin. Spray concentrations of 10 and 50 mg AI litre-1 in Ageratum houstonianum Mill flowers resulted in total suppression of adults up to day 11 and of larvae up to day 20 after treatment. Under standard laboratory conditions, emamectin exhibits a considerable activity on the whitefly Bemisia tabaci (Gennadius) and the leafminer Liriomyza huidobrensis (Blanchard). Further studies are required to evaluate its potential activity on the latter pests under field conditions.  相似文献   

A Simplified Method of Preparing Active Extracts of B-Glucuronidase     

Fishman WH  Talalay P 《Science (New York, N.Y.)》1947,105(2718):131-132

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Optimized methods for obtaining cellulose and cellulose sulfates from birch wood     

Boris N. Kuznetsov  Svetlana A. Kuznetsova  Vladimir A. Levdansky  Alexandr V. Levdansky  Natalia Yu. Vasil’eva  Nikolay V. Chesnokov  Natalia M. Ivanchenko  Laurent Djakovitch  Catherine Pinel 《Wood Science and Technology》2015,49(4):825-843

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New procedure for the simulation of belowground competition can improve the performance of forest simulation models     

Vladimir Shanin  Raisa Mäkipää  Maxim Shashkov  Natalya Ivanova  Konstantin Shestibratov  Svetlana Moskalenko  Liliya Rocheva  Pavel Grabarnik  Kapitolina Bobkova  Alexey Manov  Andrey Osipov  Elvira Burnasheva  Maria Bezrukova 《European Journal of Forest Research》2015,134(6):1055-1074

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Gene expression in pyriproxyfen-resistant Bemisia tabaci Q biotype     

Ghanim M  Kontsedalov S 《Pest management science》2007,63(8):776-783

Pyriproxyfen is a biorational insecticide that acts as a juvenile hormone (JH) analogue and disrupts insect development with an unknown molecular mode of action. Pyriproxyfen is one of the major insecticides used to control the whitefly Bemisia tabaci (Gennadius) and comply with integrated pest management (IPM) programmes, resulting in minimal effects on the environment, humans and beneficial organisms. During the last few years, resistance to pyriproxyfen has been observed in several locations in Israel, sometimes reaching a thousandfold or more. No information exists about the molecular basis underlying this resistance that may lead to understanding the mode of action of pyriproxyfen and developing molecular markers for rapid monitoring of resistance outbreaks. In this communication, a cDNA microarray from B. tabaci was used to monitor changes in gene expression in a resistant B. tabaci population. Based on statistical analysis, 111 expressed sequence tags (ESTs) were identified that were differentially upregulated in the resistant strain after pyriproxyfen treatment. Many of the upregulated ESTs observed in the present study belong to families usually associated with resistance and xenobiotic detoxification such as mitochondrial genes, P450s and oxidative stress, genes associated with protein, lipid and carbohydrate metabolism and others related to JH-associated processes in insects such as oocyte and egg development.  相似文献   

Enzymatic modification of pectin to increase its calcium sensitivity while preserving its molecular weight     

Hotchkiss AT  Savary BJ  Cameron RG  Chau HK  Brouillette J  Luzio GA  Fishman ML 《Journal of agricultural and food chemistry》2002,50(10):2931-2937

A commercial high-methoxy citrus pectin was treated with a purified salt-independent pectin methylesterase (PME) isozyme isolated from Valencia orange peel to prepare a series of deesterified pectins. A series of alkali-deesterified pectins was also prepared at pH 10 under conditions permitting beta-elimination. Analysis of these pectins using high-performance size exclusion chromatography (HPSEC) with on-line multiangle laser light-scattering, differential viscometer, and refractive index (RI) detectors revealed no reduction in weight-average molecular weight (M(w); 150000) in the PME-treated pectin series, whereas a 16% reduction in intrinsic viscosity (IV) occurred below a degree of esterification (DE) of 47%. In contrast, alkali deesterification rapidly reduced both M(w) and IV to less than half of that observed for untreated pectin. PME treatment of a non-calcium-sensitive citrus pectin introduced calcium sensitivity with only a 6% reduction in the DE. Triad blocks of unesterified galacturonic acid were observed in (1)H nuclear magnetic resonance spectra of this calcium-sensitive pectin (CSP). These results demonstrate that the orange salt-independent PME isozyme utilizes a blockwise mode of action. This is the first report of the preparation of a CSP by PME treatment without significant loss of the pectin's M(w) due to depolymerization.  相似文献   

Discovery of intense gamma-ray flashes of atmospheric origin   总被引：1，自引：0，他引：1  

Fishman GJ  Bhat PN  Mallozzi R  Horack JM  Koshut T  Kouveliotou C  Pendleton GN  Meegan CA  Wilson RB  Paciesas WS  Goodman SJ  Christian HJ 《Science (New York, N.Y.)》1994,264(5163):1313-1316

Detectors aboard the Compton Gamma Ray Observatory have observed an unexplained terrestrial phenomenon: brief, intense flashes of gamma rays. These flashes must originate in the atmosphere at altitudes above at least 30 kilometers in order to escape atmospheric absorption and reach the orbiting detectors. At least a dozen such events have been detected over the past 2 years. The photon spectra from the events are very hard (peaking in the high-energy portion of the spectrum) and are consistent with bremsstrahlung emission from energetic (million-electron volt) electrons. The most likely origin of these high-energy electrons, although speculative at this time, is a rare type of high-altitude electrical discharge above thunderstorm regions.  相似文献   

Linked reactivity at mineral-water interfaces through bulk crystal conduction     

Yanina SV  Rosso KM 《Science (New York, N.Y.)》2008,320(5873):218-222

The semiconducting properties of a wide range of minerals are often ignored in the study of their interfacial geochemical behavior. We show that surface-specific charge density accumulation reactions combined with bulk charge carrier diffusivity create conditions under which interfacial electron transfer reactions at one surface couple with those at another via current flow through the crystal bulk. Specifically, we observed that a chemically induced surface potential gradient across hematite (alpha-Fe2O3) crystals is sufficiently high and the bulk electrical resistivity sufficiently low that dissolution of edge surfaces is linked to simultaneous growth of the crystallographically distinct (001) basal plane. The apparent importance of bulk crystal conduction is likely to be generalizable to a host of naturally abundant semiconducting minerals playing varied key roles in soils, sediments, and the atmosphere.  相似文献