The 10k zCOSMOS: Morphological Transformation of Galaxies in the Group Environment Since z ~1

We study the evolution of galaxies inside and outside of the group environment since z = 1 using a large well-defined set of groups and galaxies from the zCOSMOS-bright redshift survey in the COSMOS field. The fraction of galaxies with early-type morphologies increases monotonically with M_B luminosity and stellar mass and with cosmic epoch. It is higher in the groups than elsewhere, especially at later epochs. The emerging environmental effect is superposed on a strong global mass-driven evolution, and at z ~ 0.5 and log(M _*/M_⊙) ~ 10.2, the "effect" of the group environment is equivalent to (only) about 0.2 dex in stellar mass or 2 Gyr in time. The stellar mass function of galaxies in groups is enriched in massive galaxies. We directly determine the transformation rates from late to early morphologies, and for transformations involving color and star formation indicators. The transformation rates are systematically about twice as high in the groups as outside, or up to three to four times higher correcting for infall and the appearance of new groups. The rates reach values as high as 0.3-0.7 Gyr^(–1) in the groups (for masses around the crossing mass 10^(10.5) M_⊙), implying transformation timescales of 1.4-3 Gyr, compared with less than 0.2 Gyr^(–1), i.e., timescales >5 Gyr, outside of groups. All three transformation rates decrease at higher stellar masses, and must also decrease at lower masses below 10^(10) M _⊙ which we cannot probe well. The rates involving color and star formation are consistently higher than those for morphology, by a factor of about 50%. Our conclusion is that the transformations that drive the evolution of the overall galaxy population since z ~ 1 must occur at a rate two to four times higher in groups than outside of them

Smanjenje količine kalcija u mlijeku neutralnom ionskom izmjenom

Mlijeko spada među takve životne namirnice u kojima su u vrlo usklađenim proporcijama zastupani pojedini hranjivi sastojci: mast, bjelančevine, ugljikohidrati, mineralne tvari, vitamini. Svojim harmoničnim sastavom ono može podmiriti gotovo sve hranidbene i biološke potrebe mladog organizma - potomaka

Kemijska kvaliteta vode u proizvodnji maslaca

Kod planiranja mljekara, uključivo i izgradnju sabirališta za mlijeko, mora se kao prvo riješiti besprijekorna opskrba vodom

Kineziographic Research of Patients with Cross Bite

The paper describes the use of an objective method for the quantitative analysis of the relationship between the posterior cross-bite and the occurrence of occlusive interferences and damages to the mandible muscle elevator. Two groups of subjects were selected for the analysis: 10 patients with unilateral cross-bite and 10 students without any symptoms of temporomandibular disorders (TMD). By means of the Robert Jenkelson K5A kinesiograph we measured maximal – opening velocity of the mandible (mm/s), maximal- closing velocity (mm/s), first tooth contact velocity and displacement in the vertical plane at the maximal intercuspidation (mm). The following values were obtained: maximal-opening velocity in the first group was 349 mm/s and 380 mm/s in the control group. This difference was incidental. The maximal closing velocity in the study group was 204.9 and 345.2 in the control group (p < 0.05). The first tooth contact velocity in the study group was 75.93 and 325 in the control group (p < 0.01). Displacements in the vertical plane at the maximal intercuspidation in the investigated group was 0.240.01 mm, while in control group that value was 0120.012 mm

Prosthetic Therapy of a Seven Year Old Patient with Oligodontia

A seven year old male patient was referred by his dentist to a specialist in dental prothetics with a diagnosis of oligodontia. Examination of the orthopantomogram showed germs of only eight teeth. No teeth were present in the oral cavity. The first permanent molars had been esctracted because of caries. From the case history and a clinical examination, it was established that the boy had craniofacial dysmorphosis/ dysostosis and hypertelorizm with lower positioned and poorly formed ears. He had diagnosis of thickening of the right ventriculus. Kariotype normal. Also presented adactyly of digits II and III manus et pedis, clinodactyly of digit I, and syndactyly of digits IV and V was surgically treated. By examining the oral cavity, angulus infectiosus oris was diagnosed caused by lowered vertical dimension of occlusion and candidiasis lingue, and consequently the boy was referred to an oral pathologist for appropriate therapy. Special attention is required when fabricating a complete denture in a child\u27s mouth in orded not to comprome any prosthetic principle. Thus, we were faced with several problems including how to find impression trays of adequate size, and how to explain to the patient the procedure of functional movements, achievement of rest position, and the artificial teeth selection. Because of the small and narrow dental arches we decided for the smallest size of artificial teeth (D28) and reduced occlusion. The artificial teeth were modified and reduced. The second molar took the place of the first molar. With color and shape we tried to imitate deciduous teeth. After insertion of the complete dentures and control examination, the patient was given an appointment for making new dentures in six months, because of the growth and development of the maxilla and mandible

Investigations of Tll Suspensions

Thallous iodide suspensions were obtained by direct mixing of TlN03 and Na! solutions. The amount of TH was kept constant in the systems, while the concentrations of Na! (in excess), laurylamine nitrate (LAN) or myristylamine nitrate (MAN) were varied. Tyndallometric values were recorded as the function of Na!, LAN, and MAN concentrations respectively, for suspensions aged for various times. Particle sizes of differently aged TH in \u27Suspensions containing Na! and Eu(N03)a in solution were determined. Tyndal.:. lometry and electronmicroscopy showed fast particle growth of TH in suspension. After about 10 minutes the TH particle grew up to 1.3 μ. The zero point of charge, determined by microelectrophoresis, was attained at 0.001-0.005 M Na! and 0.0001-0.0005 M LAN depending on the conditions under which the system had been prepared. The results of radiometrically recorded adsorption- desorption equilibria show a constant increase of the adsorption capacity as the electrolyte concentration increases

Synthesis and structural characterization of microporous arsenates and phosphates

Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturne karakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni, Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedri najčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznih metala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegom različitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanih kanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni (obično alkalni i zemnoalkalni katjoni) ili molekuli (najčešće mali organski molekuli), što čini ova jedinjenja veoma interesantnim zbog njihovih fizičkih i hemijskih osobina i potencijalne primene. U okviru ispitivanja sistema T1O–T2O–X2O5–(H2O)–Y, gde je T1 dvovalentni ili jednovalentni (K+, Ca2+, Zn2+, Sr2+, Ba2+), T2 dvovalentni ili trovalentni (Mg2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Fe3+, Co3+), X petovalentni (P5+, As5+) katjon, a Y je vanmrežni katjon H2(C2H8N2)2+ ili NH4 + sintetisana su nova jedinjenja metodom niskotemperaturne hidrotermalne sinteze i određene njihove kristalne strukture. Cilj je bio da se u okviru ovog sistema sintetišu monokristali koji u mikroporama ili međuslojnom prostoru sadrže različite jone i molekule kao što je etilendiamin, C2H4(NH2)2, ili odgovarajuća protonovana forma. Kvalitet dobijenih monokristala proveravan je pomoću optičkog mikroskopa ili binokularne lupe i strukture kristala određene su metodom rendgenske difrakcije na monokristalu. Za morfološku i hemijsku karakterizaciju korišćena je metoda skenirajuće elektronske mikroskopije (SEM) dopunjena energetsko-disperzivnim sistemom (EDS). Kod kristala koji su zahtevali preciznu kvantitativnu hemijsku analizu korišćena je elektronska mikrosonda, a metoda ramanske spektroskopije korišćena je za određivanje prisustva H2O, (OH)−, (NH4)+ i NH3. Pokazano je da četiri sintetisana kristala imaju zeolitski DFT-tip strukture. To su (H2en)[ZnAsO4]2 (ZnAs), (H2en)[Co0,1Zn0,9AsO4]2 (ZnCoAs),...The doctoral dissertation research subjects are the synthesis and structural investigation of new arsenate and phosphate containing Mg, K, Ca, Mn, Fe, Co, Ni, Cu, Zn, Sr, Ba and other cations. In the structures of arsenates and phosphates, AsO4- and PO4-tetrahedra are usually linked with tetrahedrally and octahedrally coordinated cations of transition metals forming open structures (layers or 3D frameworks) with a wide range of different topologies. In the holes, or pores, which are in the form of a connected or unconnected channels, tunnels, cages and the interlayered space, various non-framework ions (usually alkaline and earth alkaline cations) or molecules (usually small organic molecules) can be incorporated. Therefore these compounds are very interesting due to their physical and chemical properties and potential applications. In the course of the investigation of the T1O–T2O–X2O5–(H2O)–Y system, where T1 is a divalent or monovalent (K+, Ca2+, Zn2+, Sr2+, Ba2+), T2 divalent or trivalent (Mg2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Fe3+, Co3+), X pentavalent (P5+, As5+) cation, and Y is non-framework cation H2(C2H8N2)2+ or NH4 +, several novel compounds have been synthesized using the low temperature hydrothermal synthesis method, and their crystal structures have been determined. The aim was to synthesize single crystals with micropores or interlayer space containing different ions and molecules like the ethylenediamine, C2H4(NH2)2, or the corresponding protonated forms. The quality of the obtained single crystals was evaluated using an optical or binocular microscope, and the crystal structure was solved using single-crystal X-ray diffraction data. For the morphological and chemical characterization the scanning electron microscopy (SEM), coupled with energy-dispersive system (EDS) was used. The electron microprobe provide precise quantitative chemical analysis, and the Raman spectroscopy method was used for the determination of the presence of H2O, (OH)−, (NH4)+ and NH3..