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91.
Trissolcus nigripedius Nakagawa (Hymenoptera: Scelionidae) is an egg parasitoid of Dolycoris baccarum L. (Hemiptera: Pentatomidae), a polyphagous insect pest of many crops including soybean. As a method for mass-rearing to augment the parasitoid, cold storage of host eggs were evaluated in the laboratory. After 0 (control), 8, 20, 60, 90, and 120 days of refrigeration, host eggs were given to adult female T. nigripedius. Host acceptance behaviors of the parasitoid, categorized as drumming, oviposition, and marking, on the refrigerated eggs and biological attributes of offspring were assessed. Most of the attributes examined were affected by the refrigeration of host eggs. But host eggs could be refrigerated for up to two months without significant change in emergence rate and sex ratio and with 90% of parasitism. In addition, the second generation of the parasitoid was not negatively affected at all. However, frozen eggs of D. baccarum can not be used for rearing the parasitoid since parasitism rate decreased to 44% on host eggs frozen for 8 days. Refrigeration of D. baccarum eggs could be useful for mass-rearing and augmentation of T. nigripedius to control D. baccarum without reduction in the quality of parasitoid’s progeny. Furthermore, refrigerated eggs could be supplemented in the field to boost the population of T. nigripedius since immature D. baccarum can not hatch after 20 days of refrigeration. 相似文献
92.
Showket Hussain Ankita Singh Sheeraz Un Nazir Sonam Tulsyan Asiya Khan Ramesh Kumar Nasreena Bashir Pranay Tanwar Ravi Mehrotra 《Journal of cellular biochemistry》2019,120(9):14213-14225
Cancer is a disease that claims millions of lives each year across the world. Despite advancement in technologies and therapeutics for treating the disease, these modes are often found to turn ineffective during the course of treatment. The resistance against drugs in cancer patients stems from multiple factors, which constitute genetic heterogeneity like gene mutations, tumor microenvironment, exosomes, miRNAs, high rate of drug efflux from cells, and so on. This review attempts to collate all such known and reported factors that influence cancer drug resistance and may help researchers with information that might be useful in developing better therapeutics in near future to enable better management of several cancers across the world. 相似文献
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Hio‐Ieng Un Shawn A. Gregory Swagat K. Mohapatra Miao Xiong Elena Longhi Yang Lu Sergei Rigin Samik Jhulki Chi‐Yuan Yang Tatiana V. Timofeeva Jie‐Yu Wang Shannon K. Yee Stephen Barlow Seth R. Marder Jian Pei 《Liver Transplantation》2019,9(24)
Molecular doping is a powerful method to fine‐tune the thermoelectric properties of organic semiconductors, in particular to impart the requisite electrical conductivity. The incorporation of molecular dopants can, however, perturb the microstructure of semicrystalline organic semiconductors, which complicates the development of a detailed understanding of structure–property relationships. To better understand how the doping pathway and the resulting dopant counterion influence the thermoelectric performance and transport properties, a new dimer dopant, (N‐DMBI)2, is developed. Subsequently, FBDPPV is then n‐doped with dimer dopants (N‐DMBI)2, (RuCp*mes)2, and the hydride‐donor dopant N‐DMBI‐H. By comparing the UV–vis–NIR absorption spectra and morphological characteristics of the doped polymers, it is found that not only the doping mechanism, but also the shape of the counterion strongly influence the thermoelectric properties and transport characteristics. (N‐DMBI)2, which is a direct electron‐donating dopant with a comparatively small, relatively planar counterion, gives the best power factor among the three systems studied here. Additionally, temperature‐dependent conductivity and Seebeck coefficient measurements differ between the three dopants with (N‐DMBI)2 yielding the best thermoelectric properties. The results of this study of dopant effects on thermoelectric properties provide insight into guidelines for future organic thermoelectrics. 相似文献
95.
-Ryu CK Song EH Shim JY You HJ Choi KU Choi IH Lee EY Chae MJ 《Bioorganic & medicinal chemistry letters》2003,13(1):17-20
2,5-Disubstituted-6-arylamino-4,7-benzimidazolediones were synthesized and tested for in vitro antifungal activity against pathogenic fungi. Among them, 6-arylamino-5-chloro-2-(2-pyridyl)-4,7-benzimidazolediones exhibited potent antifungal activity against Candida species and Aspergillus niger. 相似文献
96.
The magnetic surface polaritons (MSPs) mode rarely exists in natural materials, mainly due to their limited magnetic response.
In order to understand the relationship between the MSPs mode and the limited magnetic response, we theoretically derive a
general dispersion equation of the MSPs mode for two kinds of biaxial anisotropic media. The dispersion equation suggests
the requirements of μ
x
< 0 < ε
z
, μ
x
μ
y
> 1, and momentum conservation need to be satisfied, which guides us to design a planar biaxial magnetic metamaterials (PBMM)
with two orthogonal negative permeabilities (i.e., μ
x
< 0 and μ
y
< 0). In addition, the results of the retrieval magnetic permeability and electric permittivity indeed point out that our
PBMM satisfies the aforementioned requirements. Meanwhile, we investigate the mechanism of the magnetic field by a consideration
of an induced current loop, and subsequently we demonstrate the artificial MSPs mode under transverse electric excitation
by numerical simulation. After a numerical fit of simulation results, we find that the field of the MSPs mode is in good agreement
with the analytical calculation of Maxwell’s equations. Moreover, we also simulate three unsatisfied aforementioned requirements
as control conditions to verify the general dispersion equation of the MSPs mode. 相似文献
97.
The discovery of natural and natural-based compounds has resulted in its application as an alternative to synthetic algicides to control harmful algae in aquatic systems. Of the many natural-product-based algicides, sorgoleone, a natural plant product from Sorghum bicolor root exudates has been investigated for its controlling effect on different algal species and its acute fish toxicity. Growth of the blue green algal species Microcystis aeruginosa Kützing was completely inhibited by the crude methanol extract of sorghum root at 20 μg mL−1. The most noticeable inhibition was observed in the bioassay of n-hexane soluble extract, where 98% growth inhibition occurred in M. aeruginosa at the concentration of 1.25 μg mL−1. Sorgoleone very effectively controlled blue green algae inhibiting 97% of M. aeruginosa at 0.5 μg mL−1 and 99% of Anabaena affinis Lemmermann at 4 μg mL−1. In contrast, inhibition of the green algae species Chlorella vulgaris Beijerinck and Scenedensmus spp. at 16 μg mL−1 sorgoleone was 87 and 68%, respectively. There were no mortalities or adverse effects observed in any of the fish exposed to water control, solvent control, and a nominal concentration of 1 μg mL−1 during the test period. The no observed effect concentration (NOEC) value was 1.5 μg mL−1 for the tested fish (O. latipes). Sorgoleone can be considered as an effective and an ecologically and environmentally sustainable approach to controlling harmful algae. 相似文献
98.
99.
100.
EY Kwon SK Shin YY Cho UJ Jung E Kim T Park JH Yoon Park JW Yun RA McGregor YB Park MS Choi 《BMC genomics》2012,13(1):450