direct capture
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2021 ◽  
Vol 80 (04) ◽  
pp. 67-80
Author(s):  
Juan MALDONADO-CARRIZALES ◽  
Javier PONCE-SAAVEDRA ◽  
Alejandro VALDEZ-MONDRAGÓN

Spiders have been used to evaluate changes in systems by anthropization effect, some species showing sensitivity to gradual and drastic changes such as urbanization, and other species have been documented as tolerant to this effect. The goal of this work was to describe the change in the spider community in relation to the age of buildings. at the west of Morelia, Michoacán, Mexico. Three categories of construction time and the neighboring vegetation as the pre-urbanization environment were used for comparison. Using direct capture, pit-fall traps and beating nets, 3,619 spiders were collected, and 3,219 (315 males, 630 females and 2,274 immatures) were used for the analysis after removal juveniles that was not possible to identify. A total of 28 families, 93 genera, 47 species and 55 morphospecies were identified. This represents the greatest richness and abundance recorded in urban environments of the country. It describes changes in alpha diversity from colonization in recent constructions to those built 17 years ago. I t was observed that abundance, richness, and diversity decrease with the age of a building, but with high equitability in every age of construction. The age of a building is an important factor for the process of succession in urban environments.


2021 ◽  
pp. 113912
Author(s):  
Sangsik Kim ◽  
Patarajarin Akarapipad ◽  
Brandon T. Nguyen ◽  
Lane E. Breshears ◽  
Katelyn Sosnowski ◽  
...  

2021 ◽  
Author(s):  
Soichi Kikkawa ◽  
Kazushi Amamoto ◽  
Yu Fujiki ◽  
Jun Hirayama ◽  
Gen Kato ◽  
...  

The phase separation between a liquid amine and the solid carbamic acid exhibited >99% CO2 removal efficiency under a large-scale gas stream of 400 ppm CO2. Isophorone diamine [IPDA; 3-(aminomethyl)-3,5,5-trimethylcyclohexylamine] reacted with CO2 in the CO2/IPDA molar ratio of ≥ 1 even in H2O as a solvent. The captured CO2 was completely desorbed at 333 K because the disolved carbamate ion releases CO2 at low temperature. The reusability of IPDA under CO2 adsorption-and-desorption cycles without degradation, the >95% efficinecy kept for 100 hours under direct air capture condition, and high CO2 capture rate (214 mmol/h for 1 mol amine) suggest that the phase separation system using IPDA is robust and durable for practical use.


2021 ◽  
Author(s):  
Manami Inaba ◽  
Ryohei Nakao ◽  
Fumiko Imamura ◽  
Yutaka Nakashima ◽  
Seiji Miyazono ◽  
...  

The global outbreak of the SARS-CoV-2 pandemic has increased the focus of Wastewater-based epidemiology (WBE) studies as a tool for understanding the epidemic and risk management. A highly sensitive and rapid method for the virus concentration from wastewater is needed to obtain the accurate information for early detection of SARS-CoV-2 outbreak and epidemic. In this study, we evaluated the efficiency of the direct capture method provided from Promega, based on column adsorption using the wastewater from actual infectious diseases ward. The efficiency of the nucleic acid extraction-purification process was also evaluated by Maxwell RSC instrument (fully automated extraction) and QIAamp Viral RNA mini kit (manual extraction). The obtained SARS-CoV-2 data from wastewater were analyzed with the number of inpatients which is the consideration of the severity and the days of onset. The combination of direct capture and Maxwell's method (DC-MW) was suggested to be a highly sensitive and simple method with better concentration efficiency and quantification than other methods. Moreover, the inpatient conditions (severity and days of after onset) should be considered to accurately understand the actual status of the correlation between the number of inpatients and SARS-CoV-2 concentration in wastewater. The highly sensitive method of DC-MW was suggested to assess more actual situation of SARS-CoV-2 shedding into the wastewater.


2021 ◽  
Vol 910 (1) ◽  
pp. 012036
Author(s):  
CHENNOUF Rekia ◽  
SAGGOU Hayat ◽  
BENBRAHIM Keltoum ◽  
LAMRANI Cherifa ◽  
BRAHMI Karima

Abstract Tuta absoluta (Meyrick) is an invasive pest of tomato native to South America, where it is responsible for extensive damage. The study of this bioaggressor under greenhouse tomato in the region of Ouargla by pheromone traps showed that the global dynamics of populations T. absoluta 5 shows the difference in successive generations of six months is the growth cycle of tomato. There were a maximum of 1922 individuals in the three greenhouses studied. The life cycle of T. absoluta in tomato plants (T: 34 ° C H%: 50 - 60%) lasts 23.85 days. This pest has caused losses of up to 100% in leaves and fruits of tomato in February. Observation and direct capture to identify the natural enemies of T. absoluta as Chrysoperla carnea Coccinella algerica. and the parasitoid Trichogramma sp. Damage is directly related to the reduction of plants photosynthetic capacity and of production levels in tomato crops; indirect damage can be also caused by secondary infections, with pathogens developing on the infested plant and fruit tissues.


2021 ◽  
Vol 104 (4) ◽  
Author(s):  
E. M. Tursunov ◽  
S. A. Turakulov ◽  
A. S. Kadyrov ◽  
L. D. Blokhintsev

Author(s):  
Nguyen Hoang Phuc ◽  
Nguyen Tri Toan Phuc ◽  
Do Cong Cuong

We apply the Lagrange-mesh [Formula: see text]-matrix method to calculate the [Formula: see text]-factor for the [Formula: see text]C[Formula: see text]N and [Formula: see text]O[Formula: see text]F direct radiative capture reactions. By comparing the astrophysical [Formula: see text]-factors calculated with nonlocal and local potentials, we investigate the nonlocality effects coming from the nuclear potentials in the direct capture reactions. Our calculations are in good agreement with the experimental data and indicate a nonnegligible difference in the results of local and nonlocal potentials. The use of small diffuseness narrow potentials also provides a remarkably good fit in the case with multiple broad resonances. Our findings suggest that the nonlocal potential improves the calculated results although the difference between the local and nonlocal potentials is smaller than uncertainties from other sources. We propose the nonlocality potential should be used in the potential model calculation of future astrophysics rates evaluation.


2021 ◽  
Author(s):  
Lauren Y. Cheng ◽  
Peng Dai ◽  
Lucia R. Wu ◽  
David Yu Zhang

AbstractDirect capture and sequencing revealed a new DNA population in biofluids, named ultra-short single-stranded DNA (ussDNA), which was neglected by conventional DNA extraction and sequencing approaches. Evaluation of the size distribution and abundance of ussDNA in biofluids manifested generality of its presence in human, animal, and plants. Red blood cells were found to contain abundant ussDNA with enriched functional elements, and thus possesses great potential as a novel DNA biomarker.


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