Diss. (sammanfattning) Stockholm : Karolinska institutet, 2007. / Härtill 4 uppsatser.

Thesis (D.P.H.)--University of Michigan, 1991. / Includes bibliographical references (p. 62). Also issued in print.

Thesis (D.P.H.)--University of Michigan, 1991. / Includes bibliographical references (p. 62).

As the global market place becomes more integrated and tensed, there is a shift from thetraditional marketing whereby attention is given solely to the sale of a product to a morecustomer-based marketing. Customer involvement in the processing of a product is thehighlight of this phenomenon. By this their needs and preferences for a product are welladdressed and base on this management can make effective decisions. Customer usagepattern and its influencing factors have become a key for business decision-making.Customer based notion is well known by its effective result in any kind of product. Theycould help businesses to manage, to adjust strategies to better match with the customersexpectations in existing markets. And to enter new markets, where the companies haveno historical databases of the local customers, the Snus usage pattern and its influencingfactors in previous growth markets are helpful to make use of.The motivation of this thesis therefore, is to find out the usage pattern and the influencingfactors of snus (smokeless tobacco) in its growth market such as Sweden and the UnitedStates where until recently gaining popularity. This thesis will make use of relatedtheories, previous studies on snus and behavioral pattern, influencing factors andobservation in Sweden and in the United States. The findings of this thesis and theinfluencing factors on snus usage behavior could be reference guidelines for decisionmakers in the tobacco industry in already existing snus markets and potential markets forthe product in places such as Vietnam and other parts of world. Aside these, the findingswill be helpful in managing tobacco companies in general and snus in particular inexisting markets.

Smokeless powder additives are usually detected by their extraction from post-blast residues or unburned powder particles followed by analysis using chromatographic techniques. This work presents the first comprehensive study of the detection of the volatile and semi-volatile additives of smokeless powders using solid phase microextraction (SPME) as a sampling and pre-concentration technique. Seventy smokeless powders were studied using laboratory based chromatography techniques and a field deployable ion mobility spectrometer (IMS). The detection of diphenylamine, ethyl and methyl centralite, 2,4-dinitrotoluene, diethyl and dibutyl phthalate by IMS to associate the presence of these compounds to smokeless powders is also reported for the first time. A previously reported SPME-IMS analytical approach facilitates rapid sub-nanogram detection of the vapor phase components of smokeless powders. A mass calibration procedure for the analytical techniques used in this study was developed. Precise and accurate mass delivery of analytes in picoliter volumes was achieved using a drop-on-demand inkjet printing method. Absolute mass detection limits determined using this method for the various analytes of interest ranged between 0.03 - 0.8 ng for the GC-MS and between 0.03 - 2 ng for the IMS. Mass response graphs generated for different detection techniques help in the determination of mass extracted from the headspace of each smokeless powder. The analyte mass present in the vapor phase was sufficient for a SPME fiber to extract most analytes at amounts above the detection limits of both chromatographic techniques and the ion mobility spectrometer. Analysis of the large number of smokeless powders revealed that diphenylamine was present in the headspace of 96% of the powders. Ethyl centralite was detected in 47% of the powders and 8% of the powders had methyl centralite available for detection from the headspace sampling of the powders by SPME. Nitroglycerin was the dominant peak present in the headspace of the double-based powders. 2,4-dinitrotoluene which is another important headspace component was detected in 44% of the powders. The powders therefore have more than one headspace component and the detection of a combination of these compounds is achievable by SPME-IMS leading to an association to the presence of smokeless powders.

Before an IED is sent to a laboratory for analysis, it needs to be rendered safe if it did not already initiate. Render safe procedures (RSPs) include utilizing a percussion-actuated non-electric (PAN) disrupter or a mineral water bottle disrupter. Each disrupter utilizes explosives to render the device safe by breaking open the container or disrupting the fuzing system. However, the same explosives used in the RSP are also used by criminals in IED construction. As such, the explosives used in the RSP can cause problems with the interpretation of the results from forensic analysis of the IED fragments. Compounds of analytical interest in residue include nitroglycerin (NG), diphenylamine (DPA), ethyl centralite (EC), methyl centralite (MC), and pentaerythritol tetranitrate (PETN). Instrumentation used in the analysis of the residues included a gas chromatograph/mass spectrometer (GC/MS), a liquid chromatograph/mass spectrometer (LC/MS), and a gas chromatograph with an electron capture detector (GC/ECD). The PAN disrupter smokeless powder contained NG, DPA, and EC while the bulk detonation cord contained PETN. Only DPA decomposed after being burned. No residue was detected on the PVC pipes while residue was detected on the steel pipes and backpack mock IEDs. Overall, finding such residue in casework should not rule out the possibility that an individual used a particular explosive in the construction of the IED, but examiners should be aware of residues left by disrupters especially if the device initiates during the RSP.

No description available.

The use of smokeless tobacco products is increasing among teenagers and young adults in the United States. Community health professionals play a vital role in educating the public about these products, and in this regard the dental hygienist is of critical importance. This study evaluated the knowledge and attitudes towards smokeless tobacco among a representative sample of dental hygiene students in the United States. The dental hygiene schools were divided into six geographical regions and a total of 34 schools and 722 students participated. Seniors were found to score significantly higher than non-seniors both in knowledge and attitude. Furthermore, some significant differences in attitude were discovered between regions. In general, students scored poorly on both knowledge and attitude despite reporting having received classroom instruction on smokeless tobacco.

Diss. (sammanfattning) Stockholm : Karol. inst., 2005. / Härtill 5 uppsatser.

Diss. (sammanfattning) Stockholm : Karol. inst., 2002. / Härtill 5 uppsatser.