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New CRISPR-based tool inserts large DNA sequences at desired sites in cells（图）
CRISPR 新型工具 大DNA序列 PAST 基因工程
2023/6/21
Building on the CRISPR gene-editing system, MIT researchers have designed a new tool that can snip out faulty genes and replace them with new ones, in a safer and more efficient way.
Fertility Transition in Nigeria:Exploring the Role of Desired Number of Children
Fertility Transition Nigeria Desired Children
2015/7/22
Reports have suggested the onset of fertility transition in Nigeria and speculations are rife about the factors driving the observed fertility changes. This study investigates if and how 'desired numb...
Wave scattering by small bodies and creating materials with a desired refraction coefficient
wave scattering small scatterers wave focusing negative refraction
2011/1/21
In this paper the author’s invited plenary talk at the 7-th PACOM (PanAfrican Congress of Mathematicians), is presented.
Electromagnetic wave scattering by many small particles and creating materials with a desired permeability
electromagnetic waves wave scattering by many small bodies
2010/12/15
Scattering of electromagnetic (EM) waves by many small particles (bodies) embedded in a homogeneous medium is studied. Physical properties of the particles are described by their boundary impedances.
...
Desired-gain selection indices for improving performance of two Tanzania local chicken ecotypes under intensive management
Breeding desired gain local chicken selection indices
2011/1/10
A study was carried out to evaluate various desired-gain selection indices (Yamada index) in improving performance of two chicken ecotypes of Tanzania viz. Kuchi and Tanzania Medium (Medium).
Effects of Education on Determinants of High Desired Fertility: Evidence from Ugandan Villages
fertility education development demography
2009/7/17
High desired fertility is an important factor contributing to the population explosion in sub-Saharan Africa. On a broad sample of 910 respondents from rural areas of Uganda this paper assesses the i...
How Well Do Desired Fertility Measures for Wives and Husbands Predict Subsequent Fertility? Evidence from Malaysia
Fertility Measures Wives Husbands
2009/3/31
The authors examine responses to two fertility preference questions — regarding whether more children are wanted and desired total family size (compared with actual family size) — that were asked of w...
Germany：Family diversity with low actual and desired fertility
childbearing family fertility Germany
2008/12/18
Germany is a low-fertility country with a rapidly ageing population, and will remain so for the foreseeable future. There are several reasons for this trend. Germany is among the countries with the hi...
Efficiency of Different Selection Indices for Desired Gain in Reproduction and Production Traits in Hariana Cattle
Selection Indices Desired Gain Heritability Phenotypic and Genetic Correlation Production and Reproduction Traits Hariana Cattle
2016/4/13
An investigation was conducted on 729 Hariana cows maintained at Government Livestock Farm, Hisar, from 1973 to 1999, with an objective to compare the efficiency of various selection indices for attai...