Biological Affinity and Sex from the Mandible Utilizing Multiple World Populations

2014 ◽  
pp. 64-103
Keyword(s):  
Biological Affinity

α1A-Adrenocepter chromatography in studying biological affinity of piperazine compounds

2011 ◽  
Vol 31 (1) ◽  
pp. 58-61 ◽  
Author(s):  
Hong-fei WANG ◽  
Qing-lai YANG ◽  
Zheng-long ZUO ◽  
Xu-ji SHEN ◽  
Xin-feng ZHAO ◽  
...  
Keyword(s):  
Biological Affinity

scholarly journals Diversified calcimicrobes in dendrolites of the Zhangxia Formation, Miaolingian Series (Middle Cambrian) of the North China craton

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Ming-Xiang Mei ◽  
Muhammad Riaz ◽  
Zhen-Wu Zhang ◽  
Qing-Fen Meng ◽  
Yuan Hu
Keyword(s):  
North China ◽  
Cyanobacterial Mats ◽  
Third Order ◽  
Depositional Sequence ◽  
Middle Cambrian ◽  
Forming Mechanism ◽  
The North ◽  
Biological Affinity ◽  
History Of ◽  
Group 3

AbstractAs a type of non-laminated microbial carbonates, dendrolites are dominated by isolated dendritic clusters of calcimicrobes and are distinct from stromatolites and thrombolites. The dendrolites in the upper part of the Miaolingian Zhangxia Formation at Anjiazhuang section in Feicheng city of Shandong Province, China, provide an excellent example for further understanding of both growth pattern and forming mechanism of dendrolites. These dendrolites are featured by sedimentary fabrics and composition of calcified microbes as follows. (1) The strata of massive limestones, composed of dendrolites with thickness of more than one hundred meters, intergrade with thick-bedded to massive leiolites, formimg the upper part of a third-order depositional sequence that constitutes a forced regressive systems tract. (2) A centimeter-sized bush-like fabric (shrub) typically produced by calcified microbes is similar to the mesoclot in thrombolites but distinctive from clotted fabrics of thrombolites. This bush-like fabric is actually constituted by diversified calcified microbes like the modern shrub as a result of gliding mobility of filamentous cyanobacteria. Such forms traditionally include: the Epiphyton group (which actually has uncertain biological affinity), the Hedstroemia group which closely resembles modern rivulariacean cyanobacteria, and the possible calcified cyanobacteria of the Lithocodium–Bacinella group. (3) Significantly, dense micrite of leiolite is associated with sponge fossils and burrows, and is covered by microstromatolite. The Lithocodium–Bacinella group is a controversial group of interpreted calcified cyanobacteria in the Cambrian that has also been widely observed and described in the Mesozoic. Therefore, dendrolites with symbiosis of leiolites in the studied section provide an extraordinary example for further understanding of growing style of bush-like fabrics (shrubs) of the dendrolites dominated by cyanobacterial mats. Furthermore, the present research provides some useful thinking approaches for better understanding of the history of the Early Paleozoic skeletal reefs and the microbe–metazoan transitions of the Cambrian.

Synthesis, Electronic Structure and Anti-Cancer Activity of the Phenyl Substituted Pyrazolo[1,5-a][1,3,5]triazines

2021 ◽  
Vol 25 ◽  
Author(s):  
Evgenia S. Veligina ◽  
Nataliya V. Obernikhina ◽  
Stepan G. Pilyo ◽  
Oleksiy D. Kachkovsky ◽  
Volodymyr S. Brovarets
Keyword(s):  
Electronic Transition ◽  
Lone Electron Pair ◽  
Electron Pair ◽  
Anti Cancer ◽  
Protein Molecules ◽  
Biological Affinity ◽  
Cancer Types ◽  
Derivatives Of ◽  
Cancer Activity

: Background: Synthesis of a series of 2-(dichloromethyl)pyrazolo[1,5- a][1,3,5]triazines was carried out and evaluated in vitro for their anticancer activity against a panel of 60 cell lines derived from nine cancer types. The joint quantum-chemical and experimental study of the influence of the extended πconjugated phenyl substituents on the electron structure of the pyrazolo[1,5-a][1,3,5]triazines as Pharmacophores were performed. It is shown that the decrease in the barriers to the rotation of phenyl substituents in compounds 1-7 possibly leads to an increase in the anti-cancer activity, which is in agreement with the change in the parameter biological affinity ϕ0. Analysis of the S0 → S1 electronic transitions (π→π*) of the pyrazolo[1,5-a][1,3,5]triazines shows that an increase in their intensity correlates with anti-cancer activity. Thus, the introduction of phenyl substituents increases the likelihood of investigated pyrazolo[1,5-a][1,3,5]triazines interacting with protein molecules (Biomolecule) by the π stacking mechanism. In both methyl and phenyl derivatives of pyrazolo[1,5-a][1,3,5]triazines, the second electronic transition includes the n-MO (the level of the lone electron pair in two-coordinated nitrogen atoms). The highest intensity of the η→π* electronic transition is observed in pyrazolo[1,5-a][1,3,5]triazine with pyridine residue, which does not exhibit anti-cancer activity, but exhibits antiviral activity [13]. It can be assumed that the possibility of the formation of [Pharmacophore-Biomolecule] complex by hydrogen bonding ([H-B]) mechanism with protein molecules increases.

scholarly journals Application of Gold-Nanoparticle Colorimetric Sensing to Rapid Food Safety Screening

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4166 ◽  
Author(s):  
Guangyang Liu ◽  
Meng Lu ◽  
Xiaodong Huang ◽  
Tengfei Li ◽  
Donghui Xu
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Rapid Testing ◽  
Colorimetric Sensing ◽  
Preparation Methods ◽  
Particle Spacing ◽  
Advantages And Disadvantages ◽  
Site Monitoring ◽  
Biological Affinity ◽  
Food Quality And Safety

Due to their unique optical properties, narrow size distributions, and good biological affinity, gold nanoparticles have been widely applied in sensing analysis, catalytic, environmental monitoring, and disease therapy. The color of a gold nanoparticle solution and its maximum characteristic absorption wavelength will change with the particle size and inter-particle spacing. These properties are often used in the detection of hazardous chemicals, such as pesticide residues, heavy metals, banned additives, and biotoxins, in food. Because the gold nanoparticles-colorimetric sensing strategy is simple, quick, and sensitive, this method has extensive applications in real-time on-site monitoring and rapid testing of food quality and safety. Herein, we review the preparation methods, functional modification, photochemical properties, and applications of gold nanoparticle sensors in rapid testing. In addition, we elaborate on the colorimetric sensing mechanisms. Finally, we discuss the advantages and disadvantages of colorimetric sensors based on gold nanoparticles, and directions for future development.

scholarly journals Crevice Interments Deconstructed

2015 ◽  
Author(s):  
Stephen Black ◽  
Katherine Spradley ◽  
Michelle Hamilton
Keyword(s):  
Native American ◽  
Radiocarbon Dating ◽  
Eighth Century ◽  
Bone Collagen ◽  
Private Collection ◽  
Stable Isotopic ◽  
Skeletal Analysis ◽  
Biological Affinity ◽  
Central Texas ◽  
Lines Of Evidence

The discovery of two well preserved human crania in a crevice overlooking a spring fed creek near Austin, Texas, led to medico legal, archeological, and bioanthropological investigations aimed at understanding the context and biological affinity of the crania. Archeological excavations uncovered no evidence that the crania were interred in the crevice during prehistoric times. Skeletal analysis showed they were of Native American ancestry. Radiocarbon dating indicated they are contemporary to one another and probably date to the seventh or eighth century A.D. Measured stable isotopic rations of carbon ( 13 C/ 12 C) and nitrogen ( 15 N/ 14 N) derived from human bone collagen samples from the crania are not consistent with other burial populations from the region, having higher nitrogen values than all other comparative samples. The crania also showed polish from repeated handling and several of the molars in one cranium had been glued in place. Taken together, these lines of evidence suggest the crania were removed from an unknown locality outside the Central Texas region, kept in a private collection, and placed in the crevice recently.

scholarly journals In situ filamentous communities from the Ediacaran (approx. 563 Ma) of Brazil

2021 ◽  
Vol 288 (1942) ◽  
pp. 20202618
Author(s):  
Bruno Becker-Kerber ◽  
Gabriel Eduardo Baréa de Barros ◽  
Paulo Sergio Gomes Paim ◽  
Gustavo M. E. M. Prado ◽  
Ana Lucia Zucatti da Rosa ◽  
...  
Keyword(s):  
Oxygen Concentration ◽  
Benthic Communities ◽  
Preferred Orientation ◽  
Redox Condition ◽  
Taxonomic Assignment ◽  
Diagnostic Features ◽  
Ecological Dynamics ◽  
Widespread Occurrence ◽  
Biological Affinity

Precambrian filamentous microfossils are common and diverse. Nevertheless, their taxonomic assignment can be difficult owing to their overall simple shapes typically lacking in diagnostic features. Here, we report in situ communities of well-preserved, large filamentous impressions from the Ediacaran Itajaí Basin ( ca 563 Ma) of Brazil. The filaments are uniserial (unbranched) and can reach up to 200 µm in width and up to 44 mm in length. They occur as both densely packed or sparsely populated surfaces, and typically show a consistent orientation. Although simple in shape, their preferred orientation suggests they were tethered to the seafloor, and their overall flexibility (e.g. bent, folded and twisted) supports a biological (rather than sedimentary) affinity. Biometric comparisons with modern filamentous groups further support their biological affinity, suggesting links with either large sulfide-oxidizing bacteria (SOB) or eukaryotes. Other morphological and palaeoecological characteristics further corroborates their similarities with modern large filamentous SOB. Their widespread occurrence and association with complex Ediacaran macrobiota (e.g. frondose organisms, Palaeopascichnus ) suggest that they probably played an important role in the ecological dynamics of these early benthic communities by providing firm substrates for metazoans to inhabit. It is further hypothesized that the dynamic redox condition in the latest Ediacaran, with the non-continuous rise in oxygen concentration and periods of hypoxia, may have created ideal conditions for SOB to thrive.

Tuning and predicting biological affinity: aryl nitriles as cysteine protease inhibitors

2012 ◽  
Vol 10 (30) ◽  
pp. 5764 ◽  
Author(s):  
Veronika Ehmke ◽  
Jose Enrico Q. Quinsaat ◽  
Pablo Rivera-Fuentes ◽  
Cornelia Heindl ◽  
Céline Freymond ◽  
...  
Keyword(s):  
Protease Inhibitors ◽  
Cysteine Protease ◽  
Cysteine Protease Inhibitors ◽  
Aryl Nitriles ◽  
Biological Affinity

The biological affinity ofAmsassia: new evidence from the Ordovician of North China

Palaeontology ◽  
2014 ◽  
Vol 57 (5) ◽  
pp. 1067-1089 ◽  
Author(s):  
Ning Sun ◽  
Robert J. Elias ◽  
Dong-Jin Lee
Keyword(s):  
North China ◽  
Biological Affinity ◽  
New Evidence

Three new chrysophycean stomatocysts with long spines from the Gulf of Finland, Baltic Sea

Phytotaxa ◽  
2021 ◽  
Vol 528 (4) ◽  
pp. 255-260
Author(s):  
SVETLANA N. SHADRINA
Keyword(s):  
Baltic Sea ◽  
Working Group ◽  
Gulf Of Finland ◽  
Sem Micrographs ◽  
Biological Affinity ◽  
The Gulf Of Finland

Three new morphotypes of chrysophycean stomatocysts with long spines are described following International Statospore Working Group (ISWG) guidelines and illustrated by SEM micrographs. Differences of our new morphotypes from known stomatocysts are discussed. Their biological affinity is currently unknown.

Gordon Creek Woman Meets Spirit Cave Man: A Response to Comment by Owsley and Jantz

2003 ◽  
Vol 68 (1) ◽  
pp. 161-167 ◽  
Author(s):  
Alan Swedlund ◽  
Duane Anderson
Keyword(s):  
Morphometric Analysis ◽  
The Political ◽  
Political Environment ◽  
Biological Affinity ◽  
Key Issues

Owsley and Jantz (2001) allege that we (Swedlund and Anderson 1999) misunderstand and misrepresent the events surrounding the controversy over Kennewick Man, and that we misconstrue statements they have made regarding Spirit Cave Man. They then move to their own analysis of Gordon Creek Woman to demonstrate the value of their morphometric techniques in addressing questions of biological affinity. In this reply we clarify and amplify our position on the key issues on which they challenge us, and we evaluate their morphometric analysis of Gordon Creek Woman. To our previous call for bioarchaeologists to more explicitly acknowledge the political environment in which questions of biological affinity currently arise, we add our concern that the methodologies used have their own set of problems and limitations.

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