Results 111 to 120 of about 1,917,180 (294)

Malthus Was Right After All: Poor Relief and Birth Rates in Southeastern England [PDF]

, 1989
The payment of child allowances to laborers with large families was widespread in early nineteenth-century England. This paper tests Thomas Malthus\u27s hypothesis that child allowances caused the birth rate to increase.
Boyer, George R
core   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

FEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li, Xi Xiao, Lingbin Qi, Chanyi Li, Sirui Song, Jiaying Qin, Zhigang Xue, Jinfeng Xue, Huaifang Li   +8 more
wiley   +1 more source

A Leslie matrix approach to an age-structured epidemic [PDF]

, 2016
We consider a Leslie-type matrix approach to an SIR epidemic in discrete time. We give examples of the population of susceptibles, infectives, and removals for different birth rates and two different infection rates.
Gani, Joseph, Stals, Linda
core  

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Mortalidad en pacientes en edad reproductiva en la provincia de Las Tunas

Revista Electrónica Dr. Zoilo E. Marinello Vidaurreta, 2016
Fundamento: las mujeres en edad fértil constituyen un grupo poblacional que tiene una gran importancia para el país, son las encargadas del aumento de la natalidad y pertenecen al conjunto de personas económicamente activas, que aportan de manera muy ...
Enrique Nicolás Milián Mosquera, Tereza Rodríguez Feliz, Laritza Aguilera Rodríguez, Damaris González Corrales, Lidia María Ortiz González   +4 more
doaj  

The adequacy of aging techniques in vertebrates for rapid estimation of population mortality rates from age distributions

Ecology and Evolution, 2019
As a key parameter in population dynamics, mortality rates are frequently estimated using mark–recapture data, which requires extensive, long‐term data sets.
Meijuan Zhao, Chris A. J. Klaassen, Simeon Lisovski, Marcel Klaassen   +3 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

DEMOGRAPHIC SPASMS – A LIMIT OF SUSTAINABLE TERRITORIAL DEVELOPMENT. CASE STUDY: THE DISTRICT OF CICEU [PDF]

Studia Universitatis Babeş-Bolyai: Geographia, 2015
Demographic Spasms – A Limit of Sustainable Territorial Development. Case Study: The District (“Ținut”)2 of Ciceu. Human component is currently the most precious resource, the only one which can generate production and consumption, fact that makes it ...
ALEXANDRA-CAMELIA POTRA
doaj  

THE FALLING BIRTH RATE [PDF]

BMJ, 1928
openaire   +2 more sources

The skills required for transition to university and study in biological sciences: A student perspective

FEBS Open Bio, EarlyView.
Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley   +1 more source