Results 71 to 80 of about 6,740,526 (228)

Belowground effects of ground‐dwelling large herbivores in forest ecosystems

Journal of Animal Ecology, EarlyView.
This study reviews how ground‐dwelling large herbivores affect forest soil and litter globally. Effects are context‐dependent, vary among species and forest types, and remain poorly studied in tropical forests, highlighting critical gaps in understanding nutrient cycling and ecosystem functioning.
Letícia Gonçalves Ribeiro, Mateus Melo‐Dias, Beatriz Maria Paccas Saraiva, Nacho Villar, Mauro Galetti   +4 more
wiley   +1 more source

The Coloniality of Data: Police Databases and the Rationalization of Surveillance from Colonial Vietnam to the Modern Carceral State

The British Journal of Sociology, EarlyView.
ABSTRACT Tracing the early adoption of computer gang databases by the Los Angeles County Sheriff's Department and the Los Angeles Police Department in the 1980s to the deployment of computationally‐assisted surveillance during the Vietnam War, this paper uses a genealogical approach to compare surveillance technologies developed across the arc of ...
Christina Hughes
wiley   +1 more source

Capital taxation, income shifting and retained earnings: evidence from dividend tax reforms

Fiscal Studies, EarlyView.
AbstractIn this paper, we analyse the effects of dividend tax reforms on tax revenues, income shifting and earnings retention. We examine two significant policy changes in Israel during the 2010s. Using administrative tax records, we study a permanent increase of 5 percentage points in the dividend tax rate in 2012 and a temporary tax relief enacted in
Yonatan Berman, Esteban F. Klor
wiley   +1 more source

Validation of the polysemen admixture on viability and acrosomal morphology of boar spermatozoa [PDF]

, 2007
Semen were collected using artificial vagina (AV), from 5 large white boars aged 2-2.5 years twice a week for 16 weeks in each of the two seasons, early rainy (ER) and late rainy (LR) seasons, to determine the effects of multiple semen pool admixture on ...
Okoro, VM, Ogbuewu, IP, Okoli, IC, Umesiobi, DO   +3 more
core  

Evaluation of specific fractions of Large White Yorkshire boar semen

Journal of Veterinary and Animal Sciences
The current study was conducted to evaluate the quality of specific fractions of three Large White Yorkshire (LWY) boar semen samples. Fifteen semen samples were collected by gloved hand method as an initial 10 mL of sperm rich fraction (SRF- F1)
M. Drisya, E. D. Benjamin, C. Jayakumar, M. P. Unnikrishnan, M. Manoj   +4 more
doaj   +1 more source

Hyperactivation and Tyrosine Phosphorylation of Cryopreserved Stallion Spermatozoa in Relation to Conventional In Vitro Fertilization Blastocyst Production

Andrology, EarlyView.
ABSTRACT Background Challenges in establishing clinical conventional in vitro fertilization (IVF) in horses include variation in sperm and oocyte quality, which can be affected by mare age. Extended preincubation of stallion spermatozoa has resulted in successful IVF.
Raul A. Gonzalez‐Castro, Carolina C. Porflidt, Alexandra L. Ash, Jacobo S. Rodriguez, Perla D. Fleury, Edward L. Squires, Elaine M. Carnevale   +6 more
wiley   +1 more source

Quality of Boar Liquid Semen in Modified BTS Extender Storedat5and 18°C

, 2020
Production of liquid-stored boar semen for artificial insemination (AI) requires the type of extender and temperature which is appropriate to maintain the quality of sperm during preservation.
RI, Arifiantini, FY, Delviona, Naley, Wilmientje M   +2 more
core   +1 more source

Evaluation of Dry Ice for Short-Term Storage and Transportation of Frozen Boar Semen

Animals
To address the safety problems posed by the transportation of boar semen using LN, this study was conducted on the short-term storage of frozen boar semen in dry ice (−79 °C).
Mengqian He, Lingwei Sun, Jiehuan Xu, Caifeng Wu, Shushan Zhang, Jun Gao, Defu Zhang, Yeqing Gan, Yi Bian, Jinliang Wei, Weijian Zhang, Wengang Zhang, Xuejun Han, Jianjun Dai   +13 more
doaj   +1 more source

Lactate‐Responsive Glycogen Dynamics Are Associated With Bull Sperm Motility and Fertilization Under Glucose‐Limited Conditions

Andrology, EarlyView.
ABSTRACT Background Mammalian sperm need to undergo hyperactivation, capacitation, and acrosome reaction to achieve fertilization competence. However, the female reproductive tract presents contrasting metabolic environments. The uterus is glucose‐rich, and the oviduct is lactate‐rich and glucose‐limited.
Md Faizul Hossain Miraz, Takahiro Yamanaka, Takashi Umehara, Shahrina Akter, Wambugu Enoc Njoroge, Masayuki Shimada   +5 more
wiley   +1 more source

Effect of vibration emissions during shipping of artificial insemination doses on boar semen quality

, 2022
S.328-334The shipping of semen doses to sow farms can impair boar semen quality. Unfortunately, there is currently no practice-oriented information available regarding general shipping conditions of boar semen.
Schulze, M., Bortfeldt, R., Schäfer, J., Fuchs-Kittowski, F., Jung, M.   +4 more
core   +1 more source