Results 91 to 100 of about 2,625 (221)

Wissenschaftsgeschichte als Objektarbeit am Museum für Naturkunde Berlin: Lehrtafeln bewahren und erforschen**

Berichte zur Wissenschaftsgeschichte, EarlyView.
Historical teaching charts are often overlooked in museum collections, despite their potential as valuable sources for the history of science. This article examines how the documentation and contextualisation of such objects can generate new perspectives on scientific practice and knowledge production.
Jutta Helbig
wiley   +1 more source

Phylogeographical analyses of domestic and wild yaks based on mitochondrial DNA: New data and reappraisal

, 2010
Aim We aimed to examine the phylogeographical structure and demographic history of domestic and wild yaks (Bos grunniens) based on a wide range of samples and complete mitochondrial genomic sequences. Location The Qinghai-Tibetan Plateau (QTP) of
Guo, Songchang, Carles Vilà, Yonezawa, Takahiro, Yun Yu, Jianping Su, Su, Jianping, Liu, Jianquan, Yu, Yun, Liu, Bin, Songchang Guo, Jianquan Liu, Takahiro Yonezawa, Ho, Simon Y.W., Xin Shen, Wang, Zhaofen, Bin Liu, Shen, Xin, Hasegawa, Masami, Zhaofeng Wang, Simon Y. W. Ho, Masami Hasegawa, Wang, Zhaofeng, Ho, Simon, Ho, Simon Y. W., Vila, Carles, Vilà, Carles,   +25 more
core   +2 more sources

Comparison of reproductive performance and functional analysis of spermatogenesis factors between domestic yak and semi-wild blood yak

BMC Genomics
This study investigates differences in reproductive performance, testicular histology, and transcriptomic profiles between male Subei (SB; semi-wild) yaks and two domestic yaks, Gannan (GN) and Qinghai (QH).
Xin Pang, Yangyang Pan, Meng Wang, Shantong Qiu, Yulong He, Yuchun Ren, Tianjun Yu, Sijiu Yu, Yan Cui   +8 more
doaj   +1 more source

Biotic modulators of global change effects on plant communities

Biological Reviews, EarlyView.
ABSTRACT Understanding and predicting future plant biodiversity and productivity is critical for prioritizing global change mitigation, conservation, and restoration efforts. One major challenge is that we know remarkably little about how interspecific interactions may modulate the effects of global change factors on diversity and productivity.
Anu Eskelinen, Martin Andrzejak, W. Stanley Harpole, Susan Harrison, Aimée T. Classen, Anna‐Liisa Laine, Noémie A. Pichon, Anita C. Risch, Jake Alexander, Maria‐Theresa Jessen, Phoebe L. Zarnetske, Lotte Korell   +11 more
wiley   +1 more source

Morphological study of the hoof in yak

Folia Morphologica, 2016
The fore- and hindlimb of yak have been studied by the gross anatomical methods and standard histological techniques. The artery of ungula was also determined by X-ray and acrylonitrile-butadiene-styrene casting. Anatomical features of the forelimb of yak resemble those of hindlimb, including hoof periphery, hoof coronal, hoof wall, hoof sole, and hoof
X, Yang, X, Ren, S, Yu, Y, Cui
openaire   +3 more sources

Seasonal heat production and energy balance of grazing yaks on the Qinghai-Tibetan plateau

, 2014
A study was conducted to measure the energy balance of free-ranging yak during the four annual seasons in order to elucidate the factors constraining energy utilization by grazing yak. The heat production (HP, kJ/day) of grazing non-lactating female yaks
Chen, J. Q., Mi, J. D., Guo, X. S., Wang, Y. P., Qiu, Q., Shang, Z. H., Wang, H. C., Ding, L. M., Brosh, A., Zhou, J. W., Long, R. J., Gibb, M. J.   +11 more
core   +1 more source

Toward a Greener Future: How and When Blockchain and Digitization Drive Green Finance

Business Strategy and the Environment, EarlyView.
ABSTRACT The COVID‐19 pandemic has significantly affected small‐ and medium‐sized enterprises (SMEs) and poses challenges in acquiring financing. Growing green investments require transformative infrastructure and innovative green financing solutions. Blockchain technology is ideal for delivering green environmental information because it provides real‐
Sikandar Rahman, Bailing Liu, Murad Ali, Sheikh Adeel, Dana Bakry, Saleh Bajaba, Mohammad Asif Salam, Hengky Latan   +7 more
wiley   +1 more source

Vibrational Circular Dichroism Spectra of 2,5‐Diaminoterephtalate Macrocycles Reveal Distant Vibrational Exciton Coupling

Chemistry – A European Journal, EarlyView.
The energy level diagrams for the ν(C═O) and the δ(N─H) vibrations, resulting of combining in‐phase and out‐of‐phase modes on the basis of their local symmetries, was built by applying the exciton coupling theory to a new class of chiral macrocycles, based on the 2,5‐diaminoterephthalate scaffold.
Samara Medina, Krzysztof Nowak, Marek Grzybowski, Juan Casado, Francisco J. Ramírez   +4 more
wiley   +1 more source

Chiral Dipicolinamide‐Based Push–Pull π‐Conjugated Systems as Nonreciprocal Circularly Polarized Luminescence Emitters

Chemistry – A European Journal, EarlyView.
This work presents the synthesis and characterization of chiral dipicolinamide push–pull fluorophores. While possessing similar photophysical properties in solution, their solvent‐annealed thin films exhibit unexpected, nonreciprocal chiroptical activity in both absorption and emission, including a complete inversion of the chiroptical profile upon ...
Filippo Petri, Luca Gherardi, Lorenzo Di Bari, Lorenzo Arrico   +3 more
wiley   +1 more source

Self‐Assembly of a Chiral Pyrene–Bifuran–Imide Into Helical and Spherical Nanostructures

Chemistry – A European Journal, EarlyView.
A chiral bifuran–imide derivative (1‐Py2) functionalized with pyrene units and an L‐alanine side chain exhibits solvent‐switchable self‐assembly. Increasing water fraction drives a transition from chiral helical fibers with periodic tail‐to‐tail bilayer packing to achiral nanospheres with orange photoluminescence.
Hadar R. Yakir, Or Dishi, Yael Levi‐Kalisman, Inna Popov, Linda J. W. Shimon, Ori Gidron   +5 more
wiley   +1 more source