Selected Pyrotechnic Publications Of K L And B J Kosanke Part 1 Pdf


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In pyrotechnics a salute is a device primarily designed to make a loud report bang , rather than have a visual effect, although most salutes will also have a very bright flash. They most commonly consist of a mixture of potassium perchlorate and dark aluminium powder and may have titanium added for a cloud of sparks titanium salute.

Control of Pyrotechnic Burn Rate

In both cases, the preferred method of analysis uses scanning electron microscopy to locate suspect particles and then uses energydispersive x-ray spectroscopy to characterize the particles constituent chemical elements. There are relatively few times when standard micro-analytical chemistry performed on pyrotechnic residues may not provide sufficient information for forensic investigators.

However, on thoseoccasions, PRRP analysis provides a greatly improved ability to discriminate between materials of pyrotechnic origin and other unrelated sub-stances also present. The greater specificity of PRRP analysis is the result of its analyzing a large number of individual micron-sized particles,rather than producing only a single integrated result such as produced using standard micro-analytical chemistry.

For example, PRRP analyses areused to demonstrate its ability to successfully 1 discriminate between pyrotechnic residues and unrelated background contamination, 2 identifythat two different pyrotechnic compositions had previously been exploded within the same device, and 3 establish the chronology of an incidentinvolving two separate and closely occurring explosions.

These are the reactive materials used to make safety matches,highway fusees flares , fireworks, pyrotechnic special effects,many rocket propellants, and many devices used by the militarysuch as those for signaling, delay trains, and obscurants. In the course of pyrotechnic reactions, residues reaction prod-ucts are generated. This is true whether the reaction is occurringin the primer of a cartridge in a gun, a pipe-bomb filled with afireworks flash powder, or an incendiary device made from ahighway fusee flare.

A large portion of the reaction productsfrom nearly all pyrotechnic compositions are solids at room tem-perature. As such these reaction products are potentially availablefor collection and analysis using much the same methodology asused for primer gunshot residues PGSR. In some cases, pyro-technic reaction residue particle PRRP analysis is a useful ad-junct to conventional micro-analytical chemistry by offeringforensic information not otherwise provided or not provided witha high confidence level.

Much of the current interest in PRRP analysis 24 originatedwith articles expressing concern that some fireworks might be ca-pable of producing residue particles meeting the criteria for PGSR These chemical reaction products aredispersed by the temporary and permanent gases from the reac-.

As with PGSR, the preferred method of analysis is usingscanning electron microscopy SEM to locate suspect particles,and then using x-ray energy-dispersive spectroscopy EDS tocharacterize the suspect particles constituent chemical elements. Perhaps two general examples will make it more clear whenand to what extent PRRP analysis may be helpful.

On occasion,standard micro-analytical chemistry may fail to sufficiently dis-criminate between pyrotechnic residues and other unrelated sub-stances also present on sampled items. These unrelated substancesmay preexist the pyrotechnic incident, they can be contributedduring the course of the event but not be from the pyrotechniccomposition, they may be deposited postevent, or any combina-tion of the three.

When unrelated materials are known to bepresent, often they can be successfully accounted for in the chem-ical analyses, although that may require additional or more com-plex analyses. However, when unrelated material is not known toexist or if it shares chemical species in common with the pyro-technic composition, erroneous information may result.

In thatevent, these unrelated residues could be incorrectly identified aspart of the pyrotechnic residue, or those species in common couldbe missed because of being attributed to a nonpyrotechnic source. It is the morphologic specificity of PRRP spheroidal particles inthe range from about 0. In addition to offering help in differentiating between pyro-technic and unrelated substances, there are times when PRRPanalysis can be used to differentiate between pyrotechnic residuespresent on the same item, but contributed by different pyrotechnicsources, possibly at different times.

With such information, insightmight be gained into the cause and course of an incident thatwould not be available using standard analytical methods. This isbecause standard micro-analytical chemistry almost certainlywould produce a single set of results representing the combina-tion of the various different pyrotechnic residues present on asampled item, whereas PRRP analysis can easily differentiate be-tween the different pyrotechnic residue sources.

A preliminary oral summary of these results was presented at the Inter-national Training Conference of the International Association of BombTechnicians and Investigators, Ottawa, Canada, Received 4 June ; and in revised form 23 Aug. The manner of deposition is the same particles are projectedand settle onto all surfaces in the area of the event.

The first two of these differences potentially makes performingPRRP analysis more difficult than PGSR analysis, whereas thethird generally makes it much easier. A discussion of these dif-ferences and much additional information were presented in anearlier article in this journal 4 and will not be repeated here. Many primers used in small arms contain approximately 20 mgof composition that is potentially available to produce detectableresidues. Based on thermodynamic modeling a little more thanhalf of these residues end up as solids Webb R performed chem-ical reaction product modeling using the ICT thermodynamic freeenergy modeling code.

Accordingly, burning a pound ofpowder produces nearly g of solid residue, which is nearly30, times that from a small arms primer. With the orders ofmagnitude greater quantities of detectable residues produced bypyrotechnics, finding sufficient quantities of PRRPs to character-ize the nature and to some extent, the course of incidents in-volving pyrotechnics is much less of a problem than for PGSR.

Figure 1 is an example of the very large number of PRRPs that canbe found on surfaces in the vicinity of explosive pyrotechnic re-actions. This is an electron micrograph of a small portion of apiece of plastic initially located approximately 0.

First, samples are col-lected, generally from objects from the immediate area of a pyro-. In many cases samples can be collected directly onconductive carbon dots already mounted on the.

Log in Get Started. Pyrotechnic Reaction Residue Particle Analysis. See Full Reader. Download for free Report this document. Embed Size px x x x x Kosanke,1,2 Ph. Dujay,3 Ph. Kosanke,4 M. KEYWORDS: forensic science, pyrotechnic reaction residues, scanning electron microscopy, x-ray energy dispersive spectroscopy A pyrotechnic material also called pyrotechnic composition can be defined as: A mixture of chemical elements and compounds that is capable of a self-contained and self-sustained exothermic chemical reaction, for the production of heat, light, gas, smoke or sound 1.

These chemical reaction products aredispersed by the temporary and permanent gases from the reac- tion, and then solidify as tiny spheroidal particles deposited onobjects in the area. Their means of production is the same from energetic chem-ical reactions.

The morphology is the same spheroidal particles approximate-ly from 0. The manner of collection is the same using conductive adhe-sive carbon dots. The elements present in PRRPs tend to mostly be of relativelylow-atomic number.

First, samples are col-lected, generally from objects from the immediate area of a pyro- technic event, and also from persons and their clothing when suchis available.

Selected Pyrotechnic Publications Of K. L. And B. J. Kosanke: 1 Vol. 1

In both cases, the preferred method of analysis uses scanning electron microscopy to locate suspect particles and then uses energydispersive x-ray spectroscopy to characterize the particles constituent chemical elements. There are relatively few times when standard micro-analytical chemistry performed on pyrotechnic residues may not provide sufficient information for forensic investigators. However, on thoseoccasions, PRRP analysis provides a greatly improved ability to discriminate between materials of pyrotechnic origin and other unrelated sub-stances also present. The greater specificity of PRRP analysis is the result of its analyzing a large number of individual micron-sized particles,rather than producing only a single integrated result such as produced using standard micro-analytical chemistry. For example, PRRP analyses areused to demonstrate its ability to successfully 1 discriminate between pyrotechnic residues and unrelated background contamination, 2 identifythat two different pyrotechnic compositions had previously been exploded within the same device, and 3 establish the chronology of an incidentinvolving two separate and closely occurring explosions. These are the reactive materials used to make safety matches,highway fusees flares , fireworks, pyrotechnic special effects,many rocket propellants, and many devices used by the militarysuch as those for signaling, delay trains, and obscurants.

Selected Pyrotechnic Publications of Dr. Takeo Shimizu Part 3. Download NOW! Author: Takeo Shimizu. Selected Pyrotechnic Publications of K. Kosanke, Part 5. Author: Kenneth L.


Selected Pyrotechnic Publications of K.L. and B.J. Kosanke Part 1 ( through ) (Pyrotechnic Literature Series, No.1, 1) on goglc.org *FREE*.


Pyrotechnic Reaction Residue Particle Analysis

Download K. And B. Kosanke no pay and limitless. Pyrotechnics on the Page is vintage Fletcher personal, anecdotal, and practical.

Views 14 Downloads 1 File size 3MB. Uberti 5 - Place the cylinder so that the chambers face down for easy draining. In this issue From the shooting stands Tips and tricks: Fast and easy cleaning - Loading for yards Blackpow.

Salute (pyrotechnics)

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Кабинет номер 9А197. Директорские апартаменты. В этот субботний вечер в Коридоре красного дерева было пусто, все служащие давно разошлись по домам, чтобы предаться излюбленным развлечениям влиятельных людей. Хотя Бринкерхофф всегда мечтал о настоящей карьере в агентстве, он вынужден был довольствоваться положением личного помощника - бюрократическим тупиком, в который его загнала политическая крысиная возня. Тот факт, что он работал рядом с самым влиятельным человеком во всем американском разведывательном сообществе, служил ему малым утешением.

Она быстро подняла глаза и увидела возвращающегося Грега Хейла. Он приближался к двери. - Черт его дери! - почти беззвучно выругалась Сьюзан, оценивая расстояние до своего места и понимая, что не успеет до него добежать.

Ничего подобного ему никогда не приходилось видеть. На каждой руке всего по три пальца, скрюченных, искривленных. Но Беккера интересовало отнюдь не это уродство.

Лишь один неверный шаг слишком уж настойчивой фирмы, и ключ будет опубликован, а в результате пострадают все фирмы программного обеспечения. Нуматака затянулся сигарой умами и, выпустив струю дыма, решил подыграть этому любителю шарад. - Итак, вы хотите продать ключ, имеющийся в вашем распоряжении. Интересно. А что по этому поводу думает Энсей Танкадо.

Кто будет охранять охранников. - подумала. Quis custodiet ipsos custodes.

5 Comments

Karen M.
21.03.2021 at 19:15 - Reply

Selected Pyrotechnic Publications of K. L. & B. J. Kosanke Parts ( The following 8 publications are now available in one book in pdf format on a Selected Pyrotechnic Publications of K.L. and B.J. Kosanke, Part 3. ( and ).

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23.03.2021 at 21:46 - Reply

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