Perbedaan Kualitas Spermatozoa Mencit Jantan (Mus Musculus L) Yang Diberikan Vitamin C Setelah Pemaparan Asap Rokok

: Vitamin C is an antioxidant that suppresses the oxidative stress caused by cigarette smoke purpose of this study demonstrate whether vitamin C can provide a different quality of sperm male mice Mus musculus L are given exposure to cigarette smoke. Methodology: The study subjects are 32 male mice Mus musculus L, which were randomly divided into 2 groups. The first group was the control group (K) who received treatment exposure from cigarette smoke without giving vitamin C and the second group is the treatment group (P) are given exposure from cigarette smoke and vitamin C dose of 0.40 mg / gBB /day. The treatment during 30 days, on day 31 the mice were terminated, and then examined the quality of spermatozoa motility of spermatozoa, sperm concentration and morphology of spermatozoa. Results: Test oneway ANOVA on the mean motility of spermatozoa showed Ma control group (47,38%), Mb (11,88%), Mc (18,13%), Md (22,63%) and the Ma treatment group (11.68%), Mb (17,04%), Mc (35,77%), Md (16,5%). The mean concentration of spermatozoa obtained 63,34x105/ml control group and the treatment group and the mean morphology of spermatozoa 81,75x105/ml control group showed normal morphology 50% and abnormal morphology 56,189% while the treatment group showed normal morphology 60% and 40% abnormal. Result from Oneway ANOVA test there are differences significant in the morphology of spermatozoa, concentration of spermatozoa, sperm concentration, and sperm morphology between groups (p <0,05). Conclusion: Vitamin C can improve the quality of spermatozoa after exposure to cigarette smoke

Green Synthesis of Ant Nest-Inspired Superelastic Silicone Aerogels

Green synthesis of aerogels with high mechanical properties has long remained a big challenge ever since Kistler’s report in 1931. Inspired by ant nests, we report a green method to synthesize strong, superelastic and flexible silicone aerogels. The aerogels are prepared by hydrolytic condensation of silanes with trace amounts of catalyst and surfactant (0.094 mmol mol^–1) followed by drying the hydrogels at ambient pressure. The aerogels can quickly recover their original shape after repeated compression and bending. The aerogels can be functionalized via their Si–OH or vinyl groups for specific purposes. We also extend the method for forming aerogel coatings on diverse types of materials. Our study demonstrates that green synthesis of superelastic aerogels is feasible and bioinspiration is an efficient strategy

Characterization of the four PEGylated Saks.

<p>(A) SEC analysis was carried out on a Superdex 200 column (1 cm ×30 cm). The column was equilibrated and eluted with 20 mM sodium phosphate buffer (pH 7.2) at a flow rate of 0.5 mL/min. (B) SDS-PAGE analysis of the samples. Lanes 1–6 were standard protein marker, Sak, Sak-mal5k, Sak-ald5k, Sak-mal20k and Sak-ald20k, respectively.</p

Green Synthesis of Ant Nest-Inspired Superelastic Silicone Aerogels

Green synthesis of aerogels with high mechanical properties has long remained a big challenge ever since Kistler’s report in 1931. Inspired by ant nests, we report a green method to synthesize strong, superelastic and flexible silicone aerogels. The aerogels are prepared by hydrolytic condensation of silanes with trace amounts of catalyst and surfactant (0.094 mmol mol^–1) followed by drying the hydrogels at ambient pressure. The aerogels can quickly recover their original shape after repeated compression and bending. The aerogels can be functionalized via their Si–OH or vinyl groups for specific purposes. We also extend the method for forming aerogel coatings on diverse types of materials. Our study demonstrates that green synthesis of superelastic aerogels is feasible and bioinspiration is an efficient strategy

A Sieve Semiparametric Maximum Likelihood Approach for Regression Analysis of Bivariate Interval-Censored Failure Time Data

<p>Interval-censored failure time data arise in a number of fields and many authors have discussed various issues related to their analysis. However, most of the existing methods are for univariate data and there exists only limited research on bivariate data, especially on regression analysis of bivariate interval-censored data. We present a class of semiparametric transformation models for the problem and for inference, a sieve maximum likelihood approach is developed. The model provides a great flexibility, in particular including the commonly used proportional hazards model as a special case, and in the approach, Bernstein polynomials are employed. The strong consistency and asymptotic normality of the resulting estimators of regression parameters are established and furthermore, the estimators are shown to be asymptotically efficient. Extensive simulation studies are conducted and indicate that the proposed method works well for practical situations. Supplementary materials for this article are available online.</p

Green Synthesis of Ant Nest-Inspired Superelastic Silicone Aerogels

Green synthesis of aerogels with high mechanical properties has long remained a big challenge ever since Kistler’s report in 1931. Inspired by ant nests, we report a green method to synthesize strong, superelastic and flexible silicone aerogels. The aerogels are prepared by hydrolytic condensation of silanes with trace amounts of catalyst and surfactant (0.094 mmol mol^–1) followed by drying the hydrogels at ambient pressure. The aerogels can quickly recover their original shape after repeated compression and bending. The aerogels can be functionalized via their Si–OH or vinyl groups for specific purposes. We also extend the method for forming aerogel coatings on diverse types of materials. Our study demonstrates that green synthesis of superelastic aerogels is feasible and bioinspiration is an efficient strategy

SASAs of the PEGylated Saks.

<p>Solvent accessible surface areas (SASA) were calculated by g_sas, a tool in GROMACS package. (A) Total SASAs of PEGylated products. (B) SASAs of the eight amino acids at Sak binding domain.</p

Green Synthesis of Ant Nest-Inspired Superelastic Silicone Aerogels

Green synthesis of aerogels with high mechanical properties has long remained a big challenge ever since Kistler’s report in 1931. Inspired by ant nests, we report a green method to synthesize strong, superelastic and flexible silicone aerogels. The aerogels are prepared by hydrolytic condensation of silanes with trace amounts of catalyst and surfactant (0.094 mmol mol^–1) followed by drying the hydrogels at ambient pressure. The aerogels can quickly recover their original shape after repeated compression and bending. The aerogels can be functionalized via their Si–OH or vinyl groups for specific purposes. We also extend the method for forming aerogel coatings on diverse types of materials. Our study demonstrates that green synthesis of superelastic aerogels is feasible and bioinspiration is an efficient strategy

Sedimentation velocity coefficients of the PEGylated Saks.

a<p>The sedimentation coefficient <i>S</i> (10⁻¹³s) in a standard state of water at 20°C.</p>b<p>The ratio of frictional coefficient.</p

Docking results of PEGylated Saks with micro-Plasminogen.

<p>Docking results of PEGylated Saks with micro-Plasminogen.</p