151 research outputs found
Socio-pathological profile and treatment of persons placed in penitentiary psychiatric hospital for treatment and care
U ovom radu smo se bavili istraživanjem posebne, marginalizovane
populacije ā neuraÄunljivim i smanjeno uraÄunljivim licima. O ovim smo licima, koja
su, barem kada je rijeÄ o naÅ”oj nauÄnoj produkciji, u znaÄajnoj mjeri zapostavljena,
sliku stvarali na osnovu teorijske analize i empirijskog istraživanja, koje je bilo
usmjeravano osnovnim nalazima prethodne. U prvom dijelu studije smo se bavili
teorijskom analizom pitanja koja okružuju neuraÄunljivost iz longitudinalne
perspektive, a drugom smo dali nalaze naŔeg istraživanja kojim smo obuhvatili
rezidente Specijalne zatvorske bolnice u Beogradu. Kada je rijeÄ o teorijskim
paradigmama, valja kazati da su o ovim licima najpozvanije da govore psihijatrija i
pravo. No, integrativni pristup ovoj problematici manjka, te smo, da bismo stekli sliku
o tretmanu oboljelih opasnih po druÅ”tvo, dali prikaz Äitavog niza psihijatrijskih i
pravnih shvatanja o neuraÄunljivima: uzrocima bolesti i opasnosti, te njihovom
tretmanu. Nalazi teorijske analize su nedvosmisleno ukazali na nizak druŔtveni,
institucionalni i porodiÄni položaj ovih lica, koji se može opisati kao ā izolovanost.
Ovi nalazi su bili naroÄito usmjeravajuÄi za drugi, empirijski dio studije, u kojoj smo
se bavili istraživanjem sociopatoloÅ”kih profila i tretmana Å”tiÄenika zatvorske
psihijatrijske bolnice u Beogradu. Istraživanje je teklo u dvije faze. U prvoj smo se
bavili kvantitativnom, a u drugoj produbljenom, kvalitativnom analizom priÄa o naÅ”ih
sagovornika. Najprije smo pristupili prikupljanju i analizi podatka iz službene
dokumentacije oboljelih lica (N=234) koja su se u vrijeme istraživanja nalazila u
zatvorskoj bolnici. U drugoj fazi smo izdvojili 50 ispitanika Äije su žrtve Älanovi
porodica, a važan uvidu u tretman i položaj oboljelih su nam dali njihovi Äuvari
(komandiri), ordinirajuÄi psihijatri, socijalne radnice i psiholog. Glavni cilj
istraživanja je bio deskripitivni: da opiŔemo sociopatoloŔke profile i tretman ovih lica.
Opise smo zasnovali na trima dimenzija tzv. socioloÅ”ke tipologije: 1. na liÄnim ili
antropoloÅ”kim; 2. patoloÅ”kim odlikama; 3. te na statusima: porodiÄnom i
institucionalnom, o Äemu su nam sa svoje strane liÄni uvid dali naÅ”i sagovornici ā
ispitanici. U istraživanju smo koristili nekoliko metoda za prikupljanje i analizu
podataka. RijeÄ je o analizi sadržaja, polustrukturisanom intervjuu i posmatranju,
kome smo dali mjesto pomoÄnog metoda. Nalaze smo analizirali koristeÄi statistiÄki
metod i veÄ pomenutu narativnu analizu. Neke od hipoteza koje smo provjeravali u
istraživanju, kao Å”to su ona o izuzetnoj zastupljenosti porodiÄne disfunkcionalnosti, o
niskom porodiÄnom i institucionalnom položaju, i konaÄno, o nekim kriminoloÅ”ko kliniÄkim odlikama ove populacije, stoje...This paper deals with a special, marginalized population group ā insane
and semi-insane individuals. The image about those persons, who are, at least at home
science circles, notably ignored, was created on basis of theoretical analyses and
empirical research that was directed by the results of the former. The first part of the
paper discusses the theoretical analyses of issues concerning insanity from a
longitudinal perspective, whilst the second part contains results of our research
conducted on residents of Special Penitentiary Hospital in Belgrade. In view of
theoretical paradigms it may be said that the most competent to reason about those
individuals are psychiatric and law experts. However, integrative approach to this
particular issue is deficient and, to be able to create an image about treatment of
dangerous to society mentally ill, we gathered a number of psychiatry and law related
comprehension of the insane: causes of disease and dangers from, as well as
treatment. The findings have, no doubt, revealed the low social, institutional and
family status of those individuals that may be described as ā isolation. These facts
had been a guiding point for the second, empirical part of the research which studied
sociopath profile and treatment of detainees in Belgrade penitentiary psychiatric
hospital. The research was divided into two phases. In the first phase a quantitative
analyses was conducted, while the second consisted of a qualitative analyses of
stories told by our interviewees. Firstly, the information pertaining to the official
documentation on the mentally ill (N=23) who were presently serving their sentence
at the penitentiary hospital was gathered and analysed. In the second phase we singled
out 50 individuals whose victims were their family members. Insight into their
treatment and status was provided by their guards (commanders), clinical
psychiatrists, social worker and the psychologist. The main aim of the research was
descriptive: that is to describe sociopath profiles and treatment of those individuals.
The descriptions were based on three dimensions of so-called sociological typology:
1. personal or anthropological; 2. pathological; and 3. status: family and institutional
as experienced by our interviewees ā respondents. Several methods of collecting and
analysing data were used for the research purposes. That is content analyses, semistructured
interview and observation as a supporting point. The findings were analysed by statistical method and previously mentioned narrative analyses..
Procedure of Destructive Chemical Recovery of Precious Metals in Nitric Acid Production
Svi selektivni heterogeni katalizatori platinske grupe plemenitih metala koji se upotrebljavaju za oksidaciju plinovitog amonijaka do duÅ”ikovih oksida u proizvodnji duÅ”iÄne kiseline troÅ”e se tijekom svojeg radnog vijeka. Å to je veÄi tlak oksidacije plinovitog amonijaka, to je veÄi maseni gubitak plemenitih metala platinske grupe s povrÅ”ine primijenjenog selektivnog heterogenog katalizatora. Ukupni gubici tijekom jedne Å”arže upotrebe selektivnog heterogenog katalizatora mogu iznositi od 20 do 40 % od ukupno ugraÄene mase plemenitih metala. Jedan dio izgubljene mase plemenitih metala može se oporabiti ugradnjom odgovarajuÄih sustava "hvataÄa" u obliku mreža smjeÅ”tenih ispod katalizatora ili postavljenjem razliÄitih filtara u procesni tok, gdje dolazi do izdvajanja Ävrstih Äestica plemenitih metala iz plinovite ili tekuÄe faze. Iako je uÄinkovitost njihove oporabe relativno velika, oveÄa koliÄina plemenitih metala zadržava se i na povrÅ”ini operativne opreme zadužene za proizvodnju i predgrijavanje pare u proizvodnji duÅ”iÄne kiseline. Iz navedene operativne opreme zadržana masa plemenitih metala može se ponovno oporabiti postupcima nedestruktivne i destruktivne kemijske ekstrakcije Ävrsto-tekuÄe. U radu je prikazan postupak destruktivne kemijske oporabe predgrijaÄa i kotla za proizvodnju pare primjenom vodene otopine sumporne kiseline masenog udjela od 20 % te naknadni postupak prerade dobivenog taloga do konaÄne oporabe plemenitih metala. Metodom destruktivne kemijske oporabe ukupno je ekstrahirano 212,64 kg taloga u kojem je nakon postupka prerade odreÄen kvalitativno-kvantitativan sastav s obzirom na Pt, Pd i Rh Äiji su maseni udjeli iznosili w(Pt) = 18,119 %, w(Pd) = 1,749 % i w(Rh) = 0,419 %. Opisanim postupkom uspjeÅ”no je oporabljeno u procesu proizvodnje duÅ”iÄne kiseline 38 528,2 g Pt, 3719,5 g Pd i 891,1 g Rh minimalne ÄistoÄe 99,90 %.The heart of the nitric acid production process is the chemical reactor containing a platinum-based catalyst pack and an associated catchment system, which allows the ammonia oxidation reaction to take place efficiently. Under the severe operating conditions imposed by the high-pressure ammonia oxidation process, the catalyst gauzes experience progressive deterioration, as shown by the restricted surface of the catalyst wires, the loss of catalytic activity and the loss of catalytic materials. The higher the pressure of gaseous ammonia oxidation, the greater the loss of platinum group metals from the surface of the applied selective heterogeneous catalysts. Total losses for one batch over the whole period of using selective heterogeneous catalysts may account in the range from 20 to 40 % of the total installed quantity of precious metals. An important part of the platinum removed from the platinum-rhodium alloy wires can be recovered at the outlet of the reactor by means of palladium catchment gauzes. However, this catchment process, which is based on the great ability of palladium to alloy with platinum, is not 100 % effective and a fraction of the platinum and practically all of the rhodium lost by the catalyst wires, evades the catchment package and is then deposited in other parts of the plant, especially heat exchangers. From the above mentioned operating equipment, the retained mass of precious metals can be recovered by the technical procedure of non-destructive and destructive chemical solid-liquid extraction.
Shown is the technical procedure of destructive chemical recovery of preheater and boiler for preheating and production of steam by applying sulfuric acid (w = 20 %) and subsequent procedure of raffination of derived sludge, to the final recovery of precious metals. The technical procedure of destructive chemical recovery of precious metals from preheater and boiler for preheating and production of steam in nitric acid production is shown in Fig. 1. The technical and technological characteristics of the preheater and boiler for preheating and production of steam in nitric acid production at Petrokemija d. d. is shown in Table 1. The overall results of the destructive chemical cleaning of the preheater and boiler by H 2 SO 4 (w = 20 %) is shown in Table 3. By the method of destructive chemical recovery, 212.64 kg of dry sludge were extracted, which following the refining procedure of determined qualitative and quantitative composition of Pt, Pd and Rh amounted to: w(Pt) = 18.118 %, w(Pd) = 1.749 % and w(Rh) = 0.419 %. With the applied technical procedure, the mass of the precious metals successfully recovered in the process of nitric acid production was as follows: 38528.2 g of Pt, 3719.5 g of Pd and 891.1 g of Rh with minimum purity of 99.90 %. The entire quantity of recovered precious metals is used for preparation of new catalytic gauzes, which will serve in the nitric acid production for ammonia oxidation
The impact of zno nanoparticles application on yield components of different wheat genotypes
The properties of zinc oxide nanoparticles (ZnO NPs) and their use have been shown as prominent for application in agriculture since it can bring certain benefits in agricultural production. The objective of this study was to estimate the impact of seed priming with ZnO NPs on yield components, plant height and spike length on wheat. In order to estimate the effects of ZnO nanoparticles on yield component, four winter wheat genotypes namely, NS Pobeda, NS Futura, NS 40S and NK Ingenio were selected. Seeds of each wheat genotypes were primed with different concentrations of ZnO NPs (0, 10, 100 and 1000 mg l-1) for 48 h in dark box by continuous aeration. Primed seeds were after sown in soil pots with 60-70% moisture contents during the till maturity. Considerable improvement was observed in plant height and spike length which increased with rates of ZnO NPs compared to the control. At rates of 10 mg l-1 ZnO NPs, the greatest increases in plant height and spike length were observed for genotypes NS Pobeda and NS Futura. At 100 mg l-1 ZnO NPs, the greatest increase for both traits was observed for genotypes NS 40S and NK Ingenio. Maximum rates of ZnO nanoparticles reduced both observed traits of wheat. The result indicated that ZnO nanoparticles can significantly increase plant height and spike length of wheat, but also plant response to ZnO nanoparticles significantly depends on concentration of application, as well as from wheat genotype
Search for Solar Axions Using Fe-57
We have made a search for Fe-57 gamma rays of energy 14.4 keV induced by
resonant absorption of monochromatic solar axions, as proposed by Moriyama. The
proposed axions are suggested to be emitted from the Sun, in M1 transitions
between the first, thermally excited state and the ground state of Fe-57. An
upper limit on hadronic axion mass of 745 eV is obtained at the 95% confidence
level, it being assumed that z=0.56 and S=0.5.Comment: 4 pages, latex, revtex source, 1 postscript figure included, Title
revised, some references added and expanded discussion. Version accepted by
Phys. Lett.
Indicators of health status of firefighters during the implementation of flashover simulator
U ovom radu prikazani su rezultati istraživanja provedenog na vatrogascima iz javnih vatrogasnih postrojbi (JVP) i dobrovoljnih vatrogasnih druÅ”tava (DVD) koji su sudjelovali u obuci za gaÅ”enje požara u zatvorenom prostoru u simulatoru plamenih udara (SPU) pri JVP IvaniÄ-Grad. Ispitanicima je mjeren krvni tlak, tjelesna temperatura u zvukovodu, pokazatelji pluÄne funkcije, stupanj oÅ”teÄenja DNA i indeks tjelesne mase. ZamijeÄena je visoka uÄestalost pretilosti (27%) te poviÅ”enih vrijednosti krvnog tlaka (53%) prije obuke. Spomenuta obuka dovela je do veÄeg porasta srÄane frekvencije i temperature u pripadnika DVD-a u odnosu na profesionalne vatrogasce. SistoliÄki krvni tlak nije se znaÄajnije mijenjao tijekom obuke u SPU-u, dijastoliÄki krvni tlak blago se snizio, a pokazatelji pluÄne funkcije su blago porasli u obje grupe, Å”to ukazuje da obuka u SPU-u dovodi do oÄekivanog fizioloÅ”kog odgovora kardiovaskularnog i diÅ”nog sustava na fiziÄki i termalni stres te se može smatrati zdravstveno sigurnom za zdrave vatrogasce uz obaveznu upotrebu zaÅ”titne opreme. Visoka uÄestalost pretilosti i poviÅ”enih vrijednosti krvnog tlaka ukazuje na potrebu unaprjeÄenja fiziÄke spremnosti vatrogasaca u Hrvatskoj.This article presents an overview of the investigation performed on the professional and volunteer firefighters attending Compartment Fire Behaviour Training (CFBT) in a simulator in controlled conditions. Blood pressure (BP), tympanic temperature, parameters of lung function, DNA damage, and body mass index (BMI) were recorded for study participants before and during the CFBT. High prevalence of obesity (27%) and basal hypertensive BP values (53%) was found. CFBT induced mild hyperthermia and physical strain. In comparison to professional firefighters, CFBT induced higher increase in pulse and tympanic temperature in volunteers. Systolic BP did not vary significantly, diastolic BP slightly decreased, and parameters of lung function slightly increased in both groups during the CFBT. Results confirm that CFBT induced only expected physiological cardiovascular and respiratory responses, and can be considered as a safe procedure for healthy firefighters using obligatory protective equipment. High prevalence of obesity and elevated BP values indicates a need for better physical fitness and BP control among firefighters in Croatia
Search for solar axions using Li-7
We describe a novel approach to the search for solar, near-monochromatic
hadronic axions, the latter being suggested to be created in the solar core
during M1 transitions between the first excited level of Li-7, at 478 keV, and
the ground state. As a result of Doppler broadening, in principle these axions
can be detected via resonant absorption by the same nuclide on the Earth.
Excited nuclei of Li-7 are produced in the solar interior by Be-7 electron
capture and thus the axions are accompanied by emission of Be-7 solar neutrinos
of energy 384 keV. An experiment was made which has yielded an upper limit on
hadronic axion mass of 32 keV at the 95% confidence level.Comment: revtex, 4 pages with 2 figures, title revised, minor changes, matches
version to appear in Phys. Rev.
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