Some Qualitative Properties of Solutions of Quasilinear Elliptic Equations and Applications

AbstractWe study quasilinear elliptic equations of Leray–Lions type in W1, p(Ω), maximum principles, nonexistence and existence of solutions, the control of lower (upper) bound for essential supremum (essential infimum) of solutions, sign-changing solutions, local and global oscillation of solutions, geometry of domain, generating singularities of solutions, and lower bounds on constants appearing in Schauder, Agmon, Douglis, and Nirenberg estimates

Dental Hypersensitivity as a Consequence of the Initial Course of Periodontal Treatment

Preosjetljivost dentina često je i bolno patološko stanje koje se javlja kao posljedica različitih provokacijskih čimbenika. Dentinska preosjetljivost očituje se kratkom i jakom boli koja se javlja u području ogoljela dentina kao odgovor na tipične stimuluse, kao što su: toplotni, evaporativni, taktilni, osmotski, ili kemijski, a koji se ne mogu pripisati ni jednom drugom obliku dentalnoga defekta ili dentalne patologije. (Addy M, 2002). To patološko stanje još uvijek nije potpuno razjašnjeno, ali ga treba razlikovati od boli kod zubnoga karijesa, boli kod oštećenih zuba, frakturiranih restauracija, nedovoljnoga zubnog zatvora te palatogingivnih fisura i udubina. Jedina sličnost s dentinskom preosjetljivošću jest osjetljivost zuba koja se javlja nakon profesionalne inicijalne parodontalne terapije. Čestoća dentinske preosjetljivosti varira od 3 - 57% (Verzak Ž et al. 1998, Ress JS 2000), a preosjetljivost u sklopu parodontalnih bolesti može doseći znantno veći postotak (72 - 98% (Chabanski MB et al 1996). U studiju je bilo uključeno 60 slučajno odabranih pacijenata, liječenih na klinikama našega fakulteta. Pacijenti su podijeljeni u 4 skupine prema stanju parodontalnog zdravlja. Dentalna preosjetljivost bila je ispitana s pomoću taktilne osjetljivosti, osjetljivosti na hladan zrak i vodu, prije i poslije inicijalnog parodontalnog tretmana, koji je obavljen ultrazvukom. Stupanj boli izražavan je vrijednošću od 0 - 3 (0- nema boli, 1 - blaga osjetljivost, 2 - umjerena osjetljivost, 3 - jaka bol. Preosjetljivost zuba bila je najizražene bez obzira na vrstu provokacijskoga čimbenika bol postupno smanjivala krajem prvoga tjedna. Upotreba ultrazvuka u terapiji parodontalnih bolesti može izazvti preosjetljivost zuba. Služeći se različitim provokacijskim čimbenicima utija ako se kao provokacijski čimbenik upotrebljavao hladan zrak. Također je ustanovljeno da svrdili smo da je hladan zrak izazivao naj jaču osjetljivost. Bol se obično javljala neposredno nakon uporabe ultrazvuka, ali je trajanje boli bilo razmjerno kratko.Dentin hypersensitivity is a common and painful condition, wich can occur on different kinds of provocation factors. Dental hypersensitivitiy is characterized by short sharp pain arising from exposed dentine in response to stimuli typically thermal, evaporative, tactile, osmotic or chemical and wich cannot be ascribed to any other form of dental defect or pathology (Addy M, 2002). Until today this pathological condition is still unclear but should be deffered from dental caries, chipped teeth, fractured restorations, marginal leakage around restoration, palatogingival fissures and grooves. The only similarity to the dentin hypersensitivity is teeth sensitivity, wich follows the professional initial course of periodontal therapy. The frequency of dentin hypersensitivity varies from 3 - 57% (Verzak Ž et al, 1998, Ress JS 2000), while sensitivity in periodontal diseases could reach a higher percentage: 72-98% (Chabanski MB et al 1996). 60 randomly selected patients from our Clinic were included in the study. All patients were divided into 4 groups according to the grade of pathological periodontal condition. Dental hypersensitivity was investigated by tactile and by cold air/water provocation factors before and after initial periodontal treatment using ultrsound scaling. Pain was scored by 0 - 3 scoring system ( 0 - no pain, 1 - mild pain, 2 - moderate pain, 3 - severe pain). Teeth hypersensitivity was most pronounced if cold air was used as the provocative factor. Regardless of the sort of provocative factor the pain subsided gradually within one week. Ultrasound usage in periodontal treatment may cause teeth hypersensitivity. The hypersensitivity was provoked by mechanical od psysical provocative factors. The most painful sensation was related to cold air. The pain started early after treatment and lasted for a relatively short period of time

Ispitivanje mogućnosti zaštite i revitalizacije livnice 'Pantelić' u Zemunu

Through the teaching process, students of architecture have the opportunity to examine the problem of preserving the industrial heritage of Belgrade, its historical and urban context, the creation, development, cultural, urban and architectural values, as well as examining possibilities and comparing different approaches to its presentation and modern use. The goal was to devise sustainable solutions which will preserve the cultural and historical values, authenticity and integrity of the Pantelic Foundry complex on the one hand and, on the other hand, provide for its revitalization and quality integration into the immediate urban environment, which, despite the care and neglect preserved certain elements of a recognizable historical setting. Through their proposals, the students of Foundry 'Pantelić' have fulfilled numerous contemporary cultural, educational and artistic contents that are related to its character and significance, and provide it with an active life in the future. Through this study, a contribution was given to the research of the development of industrial architecture of Belgrade, but also the design of the possibility of revitalization and sustainable development.Kroz nastavni proces, studentima arhitekture pruža se mogućnost sagledavanja problema očuvanja industrijskog nasleđa Beograda, njegovog istorijskog i urbanog konteksta, nastanka, razvoja, kulturnih, urbanističkih i arhitektonskih vrednosti, kao i ispitivanja mogućnosti i komparacije različitih pristupa njegovoj prezentaciji i savremenom korišćenju. Zadatak je bio da se osmisle održiva rešenja koja će sa jedne strane očuvati kulturno-istorijske vrednosti, autentičnost i integritet kompleksa livnice 'Pantelić', a sa druge strane obezbediti njenu revitalizaciju i kvalitetnu integraciju u neposredno urbano okruženje, koje je i pored nebrige i zapuštenosti očuvalo pojedine elemente prepoznatljivog istorijskog ambijenta. Putem svojih predloge studenti su kompleks livnice ispunili brojnim savremenim kulturnim, edukativnim i umetničkim sadržajima koji su povezani sa njenim karakterom i značajem, a obezbeđuju joj i aktivan život u budućnosti. Ovom studijom dat je prilog istraživanju razvoja industrijske arhitekture Beograda, ali je podstaknuto i osmišljavanje mogućnosti revitalizacije i održivog razvoja

Lipid composition of liver in rats fed diets supplemented with egg yolks of modified composition

The aim of this study was to examine the effects of diets supplemented with egg yolks of modified composition on the fatty-acid composition and lipid content in rat’s liver. During four weeks of the experiment 64 Wistar rats were divided into four groups of 16 individuals each (eight individuals of both sexes) and fed a commercial feed mixture for rats (group C) or diet containing 70% commercial mixture for rats and 30% freshly cooked egg yolks from laying hens fed diets with 3% fish oil (group F), 3% palm olein (group P) or 3% lard (group L). Dietary supplementation with egg yolks significantly increased the hepatic cholesterol pool in rats, regardless of the type of fat in the diet of laying hens from which the eggs originated. The content of α-linolenic acid in the liver of male rats in group P was 4-6 times higher compared to males in the other groups. Liver lipids and their fatty-acid composition differ by both, sex and dietary modified egg yolk composition in rats

Acute hydrocarbon poisoning in childhood

U proteklom petogodišnjem periodu analizirani su slučajevi akutnog zadesnog trovanja ugljikovodonicima u dječijem dobu sa ciljem da se ustanovi stepen toksičnog oštećenja respiratornog sistema i depresije CNS u zavisnosti od količine unijetog otrova. Razmatrajući klinički nalaz 20 pacijenata otrovanih ugljikovodonicima, zaključili smo da i pri ingestiji manje količine otrova može doći do oštećenja respiratornog sistema i/ili depresije CNS kao i pri unošenju veće količine ovog otrova. Zato smatramo da svu djecu otrovanu ovim sredstvima treba hospitalizirati i opservirati.Twenty patients, one to nine years of age, were treated for acute hydrocarbon poisoning in the Pediatric Clinical Hospital, in the period from 1980 to 1984. The clinical course of intoxication, as well as X-ray and laboratory findings showed that even the ingestion of small quantities of the liquid (one or two sips), similarly to poisoning with large amounts, led to respiratory disturbances and CNS depression. The treatment was symptomatic, and all the patients survived, It is suggested that regardless of the amount of hydrocarbon ingested, all patients be hospitalized for observation, and if necessary for treatment

Assessment of the Patient\u27s Education and Motivation in the Maintaince of Oral Hygiene

Zadovoljavajuća oralna higijena je conditio sine qua non u prevenciji karijesa i parodontnih bolesti. Prihvaćanje informacija za održavanje oralne higijene ovisi o više čimbenika među kojima su: pacijentova dob, stupanj naobrazbe, inteligencija, druπtveno-ekonomski status itd. Prijašnje studije su utvrdile da se gotovo 50% ljudi u održavanju oralne higijene služi samo četkicom (Karihovski B et al., 2001). Malendijk B et al 1995. Koivusilt A et al. 2003, pokazali su da ljudi s nižim stupnjem naobrazbe rijetko ili nikako ne čiste svoje zube. Ukupno 117 slučajno odabranih pacijenata koji su liječeni na klinikama Stomatološkog fakulteta uključeno je u ovu studiju. Svi pacijenti su uredno ispunili upitnik koji je posebno pripremljen za tu prigodu. Najveći dio pacijenata u našoj studiji imali su visoku i srednju školsku naobrazbu (33,3%, odnosno 43,6%). Visok postotak ispitanika već je prije dobio upute kako održavati oralnu higijenu i to od: stomatologa i medija 63,8%, stomatologa i laika 54,6%, dok je stomatolog sa stomatološkom sestrom bio zastupljen u 47 % slučajeva. Više od 61% ispitanika smatra da je dobilo dovoljno uputa u održavanju oralne higijene i da ih nije potrebno ponavljati. Ispitanici su upotrebljavali samo četkicu za zube u održavanju higijene usta u 50% slučajeva. Najveći broj pacijenata koristio se je četkicom dva puta na dan (79,5%), a četkicu pacijenti najčešće mijenjaju unutar tri mjeseca. U slučaju kada nastane neki stomatološki problem jedna četvrtina pacijenata odgađa intervenciju. Dobiveni su rezultati pokazali da je održavanje oralne higijene u naših pacijenata bilo na zadovoljavajućem stupnju. Ovakav rezultat mogao bi proizlaziti iz visoke opće razine naobrazbe naših ispitanika i iz već prije dobivenih naputaka kako održavati oralnu higijenu.Good oral hygiene is conditio sine qua non in prevention of dental caries and periodontal diseases. The acceptance of obtained information related to maintain good oral hygiene depends on several factors such as: age, educational level, personal skill, socioeconomic level etc. Previous studies revealed that almost 50 % of the general population use a toothbrush only to maintain their oral hygiene (Karihovski B et al., 2001). Malendijk B et al 1995, Koivulsit A et al., 2003, showed that people with a lower level of general education very rarely, or not at all, brush their teeth. A total of 117 randomly selected patients who attend the Clinics at our Faculty was enrolled in our study. All of them agreed to fulfill the questionaire designed by the investigators. The majority of our patients were highly educated (high school and university degree; 33.3 % and 43.6% respectively). A high percentage of the investigated patients were already educated in oral hygiene through their dentist and media (63.8%), dentist and non-preofessionals (54.6%) and dentist and dental nursing stuff in 47% of cases. A relatively high percentage (61.5%) of the investigated patients consider that there is no need for additional instructions related to oral hygiene. More than 50% of our cases only use toothbrush in their oral hygiene. The frequency of brushing the teeth was twice daily in the majority of the investigated patients, while replacements of an old toothbrush with a new one within a period of 3 months was in 79.5% of cases. One quater of the investigated patients who suffer from some kind of dental problem do not ask immediately for dental intervention. Our results have shown that the level of maintenanace of oral hygiene is rather high. Such results could be related to the high level of general education of the subjects enrolled in the study, and previously obtained education in oral hygiene

Application of peritoneal dialysis in the therapy of acute exogenous poisonings

Iznesena su vlastita iskustva primjene peritonealne dijalize kao terapijske metode u 24 slučaja teških akutnih trovanja. Potpuni uspjeh je postignut u svih 10 bolesnika otrovanih lijekovima. Međutim, kada su u pitanju bili gljivini otrovi efekat ove terapijske metode je bio znatno slabiji. Od 14 teških trovanja gljivama 6 bolesnika je umrlo. Ovo se ne može pripisati slaboj efikasnosti peritonealne dijalize jer su nam bolesnici došli na odjeljenje sa jasnim znacima teškog oštećenja jetre, bubrega i drugih organa u organizmu.The authors describe own experience with the application of peritoneal dialysis as a therapeutic method in 24 cases of very serious exogenous poisoning by drugs and mushrooms. In 10 cases of drug poisoning a complete recovery took place, but in cases of mushroom poisoning this method was not very successful. Six patients (42.8) out of the 14 seriously poisoned by mushrooms died. This cannot be attributed to the ineffectiveness of peritoneal dialysis, because all patients were admitted to hospital with clear signs of serious damages of the liver, kidneys and other organs