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冷暴力以一种无法言说的压力将我们孤立起来,让人不寒而栗,上班如同坐牢。职场中的你是否遭遇过冷暴力?你是如何化解的?是横眉冷对还是以暴制暴,甚至被逼“一走了之“? 相似文献
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Daisy Morknoy Pojanie Khummongkol Tassanee Prueaksasit 《Water, air, and soil pollution》2011,216(1-4):693-702
The concentration level of carbonyl compounds in Bangkok ambient air were measured in five roadside sites and five residential sites during July 2007 to April 2008. About 250 samples were collected and ten carbonyls were identified. Formaldehyde and acetaldehyde were the most abundant carbonyl compounds found in Bangkok ambient air. The ambient concentration of formaldehyde at the roadside areas in Bangkok during July 2007 to April 2008 ranged from 5.14 to 17.2 ??g/m3 (average 11.53 ??g/m3) while, the ambient concentrations of formaldehyde in residential areas in Bangkok during the same period ranged from 3.06 to 19.9 ??g/m3 (average 9.65 ??g/m3). The concentrations of acetaldehyde in roadside areas ranged from 1.59 to 7.95 ??g/m3 (average 3.51 ??g/m3) while at the residential areas the concentrations of acetaldehyde during the same period ranged from 1.07 to 8.05 ??g/m3 (average 3.11 ??g/m3). Other compounds showed low concentration. The concentrations of formaldehyde and acetaldehyde were low during the rainy season due to rain washout since these compounds are water soluble. The concentrations were high during the cold season due to stable conditions during these months. The concentrations slightly decreased during the summer due to photochemical reactions and photolysis under extreme temperature. Formaldehyde and acetaldehyde showed good correlation during 17:00 P.M. to 05:00 A.M. due to absence of solar radiation that may enhance photochemical reactions and mobile sources may be the sources of emission in the environment. It was also found that the concentrations of formaldehyde and acetaldehyde were low during the night time. 相似文献
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Michiel van Breugel Jefferson S. HallDylan J. Craven Timothy G. GregoireAndrew Park Daisy H. DentMark H. Wishnie Emilio MariscalJose Deago Diogenes IbarraNorma Cedeño Mark S. Ashton 《Forest Ecology and Management》2011,261(10):1580-1589
Reforestation in the tropics takes place across a wide variety of edaphic and climatic conditions. Reforestation trials have demonstrated that edaphic conditions may have a strong effect on species growth and survival. However it is unclear how the relative importance of soil conditions influences species survival and growth under varying amounts of rainfall and lengths of dry season.Two-year growth and mortality of 49 tree species were evaluated in four sites across Panama, representing a soil fertility-rainfall matrix. Despite strong contrasts in environmental conditions, 65% of individual species did not show consistent differences in growth between high- and low-fertility sites or between wet and dry sites. However, early growth and survival were more strongly affected by soil fertility than by rainfall patterns for the second-largest group; 30% of the species grew significantly better in both high-fertility sites than in both low-fertility sites, compared to 6% in both wet sites vs. both dry sites. In the two high-fertility sites, growth of 47% and 69% of the species was better than their across-site means. On the other hand, 55% and 73% of the species grew significantly slower than their across-site averages in the two low-fertility sites.Survival did not appear to be associated to either soil fertility or rainfall. In each site, only a few species had a significantly higher or lower within-site survival than across-site survival.Diversifying the choice of tree species increases the options for reforestation strategies that match species characteristics to local site conditions and to the objectives and management possibilities of landholders. Testing the performance of potential species under different site conditions in screening trials is paramount, both to inform selection from among the vast diversity of tree species in the tropics that show good growth and survival under different local site conditions and to filter out unsuitable species and avoid early failure of the reforestation effort. 相似文献
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Prashant Vikram Jorge Franco Juan Burgueo Huihui Li Deepmala Sehgal Carolina Saint‐Pierre Cynthia Ortiz Vaibhav Kumar Singh Clay Sneller Achla Sharma Maria Tattaris Carlos Guzman Javier Pena Carolina Paola Sansaloni Jaime Amador Campos Serna Karthikeyan Thiyagarajan Guillermo Fuentes Davila Matthew Reynolds Kai Sonder Velu Govindan Marc Ellis Sridhar Bhavani Mohammad R. Jalal Kamali Mozaffar Roosatei Sanjay Singh Daisy Basandrai Navtej Singh Bains Ashwani Basandrai Thomas Payne Jos Crossa Sukhwinder Singh 《Plant Breeding》2021,140(1):87-99
Iranian wheat landrace accessions (IWAs) were collected from country‐wide farm fields and market places in 1935 by a professor at the University of Tehran and shared with University of California at Davis, California. IWAs were further submitted to the genebank of International Maize and Wheat Improvement Center (CIMMYT), Mexico. 2,403 IWAs from CIMMYT’s genebank were assayed by DArT‐seq technology to assess genetic diversity. No apparent ecogeographic patterns related to genetic diversity were detected, probably due to long‐term transport and frequent interchange of landraces among farmers. A multivariate clustering procedure combining genotypic and phenotypic information was used in selecting a core‐set, which represented 15% of the hexaploid wheat accessions included in this study. This subset captured an estimated 93% of rare (frequency <0.05) alleles. Multisite phenotypic data (India, Mexico) validated the ability of the core‐set in detecting useful variants. Potential donor accessions for multiple traits (disease resistance, zinc concentration) were identified from the core‐set for wheat‐breeding. This report illustrates a breeder friendly robust core‐set formulation strategy for harnessing the useful genetic variation stored in the genebanks. 相似文献
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Van Droogenbroeck C Beeckman DS Harkinezhad T Cox E Vanrompay D 《Veterinary microbiology》2008,132(3-4):372-378
Chlamydophila (C.) psittaci infections are highly prevalent in turkeys and the economical and public health importance of these infections has been recognized since 1950. As there are no vaccines, antibiotic treatment (tetracylines, enrofloxacine) is often needed to allow marketing of poultry. In this study, we explored the use of ovotransferrin (ovoTF), a natural anti-microbial protein, in preventing an experimental C. psittaci infection in specific pathogen free (SPF) turkeys. Turkeys were treated with aerosolized ovoTF prior to the infection. Groups 1 and 2 received a single dose of 10 and 5 mg ovoTF per turkey, respectively. Group 3 received a daily dose of 5mg ovoTF per turkey during 12 days. Group 4 served as untreated, infected control group. Turkeys were aerosol infected using 10(6) TCID(50) of the virulent C. psittaci serovar/genotype D strain 92/1293. Birds were monitored (clinical signs, bacterial excretion) during 12 subsequent days before being necropsied. At necropsy, pathology and C. psittaci replication in various tissues was examined. A single dose of 10mg ovoTF and a repeated daily dose of 5mg ovoTF could not prevent the birds from becoming infected with C. psittaci, but they significantly reduced the outcome of the infection. A single dose of 5mg ovoTF had no influence on the outcome of the infection as compared to the non-treated infected controls. Our results demonstrate the anti-chlamydial effect of ovoTF in vivo and present a base for further research on practical applications of ovoTF on turkey farms. 相似文献
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Megan E Westfall Dina L Demcovitz Daisy R Plourdé David S Rotstein Daniel R Brown 《Journal of zoo and wildlife medicine》2006,37(2):206-208
Mycoplasma iguanae proposed species nova was isolated from vertebral abscesses of two feral iguanas (Iguana iguana) from Florida. Three strains were evaluated for sensitivity to a variety of antibiotics. The minimum inhibitory concentrations for M. iguanae, assessed by broth dilution methods, of clindamycin, doxycycline, enrofloxacin, oxytetracycline, and tylosin (all <1 microg/ml) were lower than those of chloramphenicol (32 micro/ml) and erythromycin (64 microg/ml). The profile was identical to that of Mycoplasma alligatoris, previously isolated from American alligators (Alligator mississippiensis). M. iguanae strain 2327T was subcultured without antibiotics to assess mycoplasmacidal activity. Clindamycin, doxycycline, oxytetracycline, and tylosin were bacteriostatic from 0.1 to 0.5 microg/ml, whereas enrofloxacin was bactericidal at 20 ng/ml. An enrofloxacin dosage of 5-10 mg/kg achieves peak plasma concentrations >1 microg/ml, with an elimination half-life of 6-20 hr, in alligators. Although concentrations achieved in the vertebrae by i.m. or i.v. injection are probably lower than those in plasma, these data suggest that enrofloxacin may be useful to treat M. iguanae mycoplasmosis in iguanas. 相似文献
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Beeckman DS Van Droogenbroeck CM De Cock BJ Van Oostveldt P Vanrompay DC 《Veterinary research》2007,38(5):729-739
The effect of ovotransferrin (ovoTF), human lactoferrin (hLF) and bovine lactoferrin (bLF) on the obligate intracellular pathogen Chlamydophila (Cp.) psittaci was evaluated using a model of Buffalo Green Monkey kidney (BGM) cells and HD11 chicken macrophages as artificial hosts. Firstly, the effect of transferrins on the infectivity of the bacteria was evaluated. Pre-incubation of Cp. psittaci with 0.5 to 5 mg/mL ovoTF prior to infecting BGM cells significantly lowered the infection rate (P < 0.05). For both lactoferrins, the infection rate could only be reduced with 5 mg/mL, albeit not significantly as compared to the infection rate created by the untreated bacteria. Secondly, transferrins were tested for their ability to influence bacterial adhesion and entry in HD11 cells. Maximal non-cytotoxic and non-bactericidal concentrations of 0.05 mg/mL ovoTF and 0.5 mg/mL hLF and bLF were used. Overall, ovoTF was more effective than human and bovine LF in inhibiting bacterial irreversible attachment and cell entry and the latter was accompanied by a dose-dependent reduction of actin recruitment at the bacterial entry site. However, once bacteria had entered HD11 cells, transferrins had apparently no effect on intracellular replication. The present findings suggest a possible role for transferrins and especially ovoTF, in preventing avian Cp. psittaci infections. 相似文献
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Leal PF Braga ME Sato DN Carvalho JE Marques MO Meireles MA 《Journal of agricultural and food chemistry》2003,51(9):2520-2525
In the present study the antioxidant, anticancer, and antimycobacterial activities of extracts from ginger (Zingiber officinale Roscoe), rosemary (Rosmarinus officinalis L.), and turmeric (Curcuma longa L.) were evaluated. The extracts were obtained using supercritical CO(2) with and without ethanol and/or isopropyl alcohol as cosolvent. The extracts' antioxidant power was assessed using the reaction between beta-carotene and linolenic acid, the antimycobacterial activity against M. tuberculosis was measured by the MABA test, and their anticancer action was tested against nine human cancer ancestries: lung, breast, breast resistant, melanoma, colon, prostate, leukemia, and kidney. The rosemary extracts exhibited the strongest antioxidant and the lowest antimycobacterial activities. Turmeric extracts showed the greatest antimycobacterial activity. Ginger and turmeric extracts showed selective anticancer activities. 相似文献