Toxic material catcher for gas guns

1975 ◽  
Vol 46 (1) ◽  
pp. 99-100
Author(s):  
R. R. Horning ◽  
G. L. Hickman
Keyword(s):  
Toxic Material ◽  
Gas Guns

A COMPARISON OF LABORATORY AND FIELD TESTS OF BACILLUS SPHAERICUS STRAIN 1593 AND BACILLUS THURINGIENSIS VAR. ISRAELENSIS AGAINST AEDES STIMULASS LARVAE (DIPTERA: CULICIDAE)

1982 ◽  
Vol 114 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Stephen P. Wraight ◽  
Daniel Molloy ◽  
Patricia McCoy
Keyword(s):  
Bacillus Thuringiensis ◽  
Entire Range ◽  
Field Tests ◽  
Bacillus Sphaericus ◽  
Toxic Material ◽  
Mean Temperature

AbstractBacillus thuringiensis var. israelensis (serotype H-14) and B. sphaericus strain 1593 were tested against Aedes stimulons larvae in the laboratory and in 38-cm-diam, open-ended cylinders embedded in the bottom detritus of a woodland pool. Estimates of LC50 were lower against fourth instars in the field at a mean temperature of 15.9 °C than in the laboratory at 21.1 °C. The greater efficacy in the field was attributed to high daytime water temperatures (mean 20.5 °C) following treatment and exposure of the larvae to substantially greater amounts of toxic material in a larger volume of water than in the laboratory. The regression of probit on log10 concentration was not linear over the entire range of mortality caused by B. sphaericus, increasing the difficulty of estimation of LC values. Bacillus sphaericus was significantly less active than B. thuringiensis.

scholarly journals Pengelolaan Limbah Bahan Berbahaya dan Beracun Ditinjau Dari Aspek Hubungan Industrial dan Corporate Social Responsibility

2020 ◽  
Vol 5 (1) ◽  
pp. 10-16
Author(s):  
Ulima Harma ◽  
Timbul Dompak
Keyword(s):  
Corporate Social Responsibility ◽  
Social Responsibility ◽  
Waste Management ◽  
Industrial Relations ◽  
Qualitative Approach ◽  
Supervision System ◽  
Descriptive Research ◽  
Industrial Companies ◽  
Toxic Material ◽  
Corporate Social

The purpose of this research to see how management Hazardous and Toxic Material Waste Judging From the Aspects of Industrial Relations and Corporate Social Responsibility. This type of research used in this research is descriptive research with a qualitative approach. The results of this study show that the management of Hazardous and Toxic Material Waste Judging from the aspects of industrial relations and corporate social responsibility, although there are still some shortcomings. Such as that there are still many industrial companies that are not very aggressive in carrying out the B3 waste management process. This proves that the policies governing waste management have not been so effectively applied in life, this can be caused by several factors such as lack of awareness in managing B3 waste, a less strict supervision system, and also rules that are felt to be not too binding so that many do not manage B3 waste properly.

Strengthening Healthy Qi and Clearing Away Toxic Material Treatment of a Severe COVID-19 Case

2021 ◽  
pp. 202-217
Author(s):  
Luqi Huang ◽  
Hao Li ◽  
Wensheng Qi ◽  
Zhixu Yang ◽  
Qing Miao
Keyword(s):  
Toxic Material

scholarly journals Natural Diatom Biosilica as Microshuttles in Drug Delivery Systems

Pharmaceutics ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 537 ◽  
Author(s):  
Joachim Delasoie ◽  
Fabio Zobi
Keyword(s):  
Drug Delivery ◽  
Targeted Delivery ◽  
Drug Delivery Systems ◽  
Binding Capacity ◽  
Specific Binding ◽  
Drug Loading ◽  
Delivery Systems ◽  
Biophysical Properties ◽  
Toxic Material ◽  
Highly Porous

Unicellular diatom microalgae are a promising natural resource of porous biosilica. These microorganisms produce around their membrane a highly porous and extremely structured silica shell called frustule. Once harvested from living algae or from fossil sediments of diatomaceous earth, this biocompatible and non-toxic material offers an exceptional potential in the field of micro/nano-devices, drug delivery, theranostics, and other medical applications. The present review focused on the use of diatoms in the field of drug delivery systems, with the aim of presenting the different strategies implemented to improve the biophysical properties of this biosilica in terms of drug loading and release efficiency, targeted delivery, or site-specific binding capacity by surface functionalization. The development of composite materials involving diatoms for drug delivery applications is also described.

Revisiting V-3 Canon for the Application of Single Stage Gas Gun

2017 ◽  
Author(s):  
Arun Tom Mathew ◽  
Tirumala Rao Koka ◽  
Murali Krishnan Payangapadan
Keyword(s):  
Design Of Experiments ◽  
Numerical Simulations ◽  
Response Surface ◽  
Three Dimensional ◽  
Optimal Location ◽  
Single Stage ◽  
One Dimensional ◽  
Alternative Design ◽  
Gas Gun ◽  
Gas Guns

Single stage gas guns are typically used for accelerating the projectiles in bird and hail impact tests of aerospace components and engines. In this paper an alternative design for single stage gas gun is studied, which is derived from V3 canon. Three dimensional numerical simulations is carried out for the optimal secondary connection angle with the main barrel. A one dimensional code is developed for the V3 canon based design. Design of experiments conducted to find the response surface for the optimal location of the secondary connection, volume and pressure of the secondary tank.

scholarly journals Performance and Modeling of a Two-Stage Light Gas Gun Driven by Gaseous Detonation

2020 ◽  
Vol 10 (12) ◽  
pp. 4383
Author(s):  
Weiqi Tang ◽  
Qiu Wang ◽  
Bingchen Wei ◽  
Jiwei Li ◽  
Jinping Li ◽  
...  
Keyword(s):  
Tube Wall ◽  
Numerical Approach ◽  
Operating Conditions ◽  
Gaseous Detonation ◽  
Two Stage ◽  
Piston Velocity ◽  
Gas Gun ◽  
Small Influence ◽  
Improved Model ◽  
Gas Guns

A two-stage light gas gun driven by gaseous detonation was newly constructed, which can make up for the disadvantages of the insufficient driving capability of high-pressure gas and the constraints of gunpowder. The performance of the gas gun was investigated through experiments and a quasi-one-dimensional modeling of it was also developed and described in detail. The model accounts for the friction and heat transfer to the tube wall for gases by adding a source term. An improved model has been established to consider the inertial loads in the piston or projectile and model the friction force with the tube wall. Besides, the effects of pump tube pressure on the performance of the gas gun are also investigated numerically. Simulations of the pressure histories in the pump tube and the piston and projectile velocities were conducted. A good agreement was observed between the computational predictions and experimental results. The results showed that the friction between the piston and wall had only small influence on the piston velocity. The proposed numerical approach is suitable for the development of two-stage light gas guns and tests of the operating conditions.

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