Selective adsorption of lead, copper and antimony in runoff water from a small arms shooting range with a combination of charcoal and iron hydroxide

In order to study heavy metals’ pollution characteristics in soil of a small arms shooting range, soil samples at surfaces and different depths were collected from a shooting range located in suburb of Beijing and analyzed for heavy metals (Pb、Cd、Cu、Zn、P、As、Hg and Sb). Site investigation results showed that the soil in the shooting range was seriously polluted by Pb bullets, and there are positive correlations between total concentrations of Hg, Cu, Pb, Zn, Sb and Pb in soil particles less than 2mm, indicating soil heavy metals’ combined pollution characteristics.

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CHANGE OF ACCURACY DUE TO BARRELS INTERCHANGEABILITY IN THE MODULAR SMALL ARMS SYSTEM

PROBLEMY TECHNIKI UZBROJENIA ◽

10.5604/01.3001.0013.5900 ◽

2019 ◽

Vol 150 (2) ◽

pp. 105-117

Author(s):

Dawid Goździk ◽

Jacek Kijewski ◽

Wojciech Koperski ◽

Przemysław Kupidura ◽

Mirosław Zahor

Keyword(s):

Mean Value ◽

Field Conditions ◽

Shooting Range ◽

Small Arms ◽

Basic Assumptions ◽

The Mean

Rifles of MSBS-5.56 system are equipped with a mechanism for an easy barrel changing, what was one of basic assumptions of system modularity. But barrel changing, although possible even under field conditions (with the use of basic tools), causes displacement of shot pattern mean point. Due to the fact that the sights are mounted on the upper receiver, it is important that this displacement is as small as possible. In order to determine the mean value of displacements for the pattern mean point and the construction parameters affecting them, a series of firings were performed using a laboratory stand and shooting range. Both repeatability of fixing the same barrel (ex-changeability) and other barrels (inter-changeability) were taken into account.

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Use of sorbents for purification of lead, copper and antimony in runoff water from small arms shooting ranges

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2012.10.005 ◽

2012 ◽

Vol 243 ◽

pp. 95-104 ◽

Cited By ~ 13

Author(s):

Espen Mariussen ◽

Marita Ljønes ◽

Arnljot Einride Strømseng

Keyword(s):

Runoff Water ◽

Small Arms ◽

Shooting Ranges

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A Counter-Current Acid Leaching Process for the Remediation of Contaminated Soils from a Small-Arms Shooting Range

Soil and Sediment Contamination An International Journal ◽

10.1080/15320383.2014.808171 ◽

2013 ◽

Vol 23 (2) ◽

pp. 194-210 ◽

Cited By ~ 8

Author(s):

Stéphanie Lafond ◽

Jean-François Blais ◽

Guy Mercier ◽

Richard Martel

Keyword(s):

Contaminated Soils ◽

Acid Leaching ◽

Shooting Range ◽

Small Arms ◽

Leaching Process ◽

Counter Current

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The Fine Structure of Glycocalyx in Human Spermatozoa. A High Resolution Cytochemical Study

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100073647 ◽

1973 ◽

Vol 31 ◽

pp. 640-641

Author(s):

P. Hernández-Jáuregui ◽

A. Sosa ◽

A. González Angulo

Keyword(s):

Negative Charge ◽

Iron Hydroxide ◽

Human Spermatozoa ◽

Surface Coat ◽

Cell Surfaces ◽

Colloidal Iron ◽

Cytochemical Study ◽

Specific Permeability ◽

Extracellular Glycoprotein ◽

Mammalian Spermatozoa

Glycocalyx is the name given by Bennett to the extracellular glycoprotein coat present in some cell surfaces. It appears to play an important role in cell properties such as antigenicity, cell adhesivity, specific permeability, and ATP ase activity. In the sperm this coat can be directly related to such important phenomena as capacitation and fertilization. The presence of glycocalyx in invertebrate spermatozoa has already been demonstrated. Recently Yanagimachi et al. has determined the negative charges on sperm surfaces of mammalian spermatozoa including man, using colloidal iron hydroxide. No mention was made however of the outer surface coat as composed of substances other than those confering a negative charge. The purpose of this work was therefore to determine the presence of a glycocalyx in human spermatozoa using alcian blue and lanthanum staining.

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