Miracle-dz/UniFAR-FTUs huggingface dataset:
Preparation and magnetic properties of nickel nanoparticles via the thermal decomposition of nickel organometallic precursor in alkylamines

Nickel nanoparticles were prepared from the thermal decomposition of nickel(II) acetylacetonate in alkylamines and characterized by powder x-ray diffraction, transmission electron microscopy and magnetic measurement. The reaction temperature, heating rate and solvent type play an important role in the control over the crystalline phase. Depending on the reaction conditions, face-centered cubic (fcc) or hexagonal close-packed (hcp) nickel nanoparticles can be obtained. Monodisperse nickel nanoparticles were also obtained by introducing surfactants. The results of magnetic characterization showed that the magnetic properties of the hcp nickel nanoparticles are quite different from those of the fcc nickel nanoparticles.
Ordinal Measures of Association

Abstract Ordinally invariant, i.e., rank, measures of association for bivariate populations are discussed, with emphasis on the probabilistic and operational interpretations of their population values. The three measures considered at length are the quadrant measure, Kendall's tau, and Spearman's rho. Relationships between these measures are discussed, as are connections between these measures and certain measures of association for cross classifications. Sampling theory is surveyed with special attention to the motivation for sample values of the measures. The historical development of ordinal measures of association is outlined. * This research was supported in part by the Statistics Branch, Office of Naval Research. Reproduction in whole or in part is permitted for any purpose of the United States Government. A large part of the work leading to this paper was done at the Department of Statistics, University of California, Berkeley. I would like to thank the following persons for their suggestions and c.
Hrvatski zadružni pokret - Pozadina i poveznice s europskim zadružnim pokretom

The paper made a comparision of Croatian and European co-operative movement, and presents the links and differences of these two movement. Data show the many similarities and differences which preceded as the result of political, social and historical experiences of individual countries. The lack of legal basis, inadequate government support, the lack of information and knowledge, the way of thinking and historical legacy created in the last 50 years are just some of the indicators of the current condition of the cooperative system in RH. The analysis results indicate the need for the further attention to this movement, who gets much more attention in the world and the application of modern cooperatives methods and principles.
Effect of age on quality and composition of one-humped camel Longissimus muscle

This study aimed to investigate the effect of camel age on meat quality and muscle composition. Samples of Longissimus thoracis muscle were randomly collected from 14 Arabian one-humped camels (Camelus dromedarius) of two age groups: Group 1 (2? 4 year-old) and Group 2 (4? 8 year-old) at the Muscat Municipality central slaughterhouse. Meat quality including muscle ultimate pH, W-B-shear force, expressed juice and colour lightness (L*), redness (a*) and yellowness (b*) were determined. Moisture, Crude Protein, fat and ash contents of freeze dried samples were determined mineral content was determined using an Inductively Coupled Plasma Emission Spectrometer (ICP). Group 1 had significantly lower ultimate pH value (5.71) and Warner-Bratzler (WB)-shear force value (6.98) and higher expressed juice (29.60 cm² g−1) than those collected from Group 2 (6.91, 13.4 and 21.26 cm² g−1, respectively). Camel meat from Group 2 (older camels) had significantly lower L* (31.69 vs. 37.74: p < 0.01), higher a* (16.18 vs. 13.37: p < 0.05) and b* (7.26 vs. 6.09) than meat from Group 1 (younger camels). The protein content decreased whereas that of fat increased with camel age. Mineral content of muscle generally tended to increase with the age of the camel. This study indicated that age had significant effects on quality characteristics of Arabian camel meat and confirmed that camel meat is healthy and nutritionous as it contains low fat (especially young camels) as well as being a good source of minerals.
Self-similar rupture of thin liquid films with slippage

In this dissertation the formation of interfacial singularities of fluid surfaces is studied. Starting with a discussion of the most important physical effects, a two-dimensional model, which includes physical effects such as surface tension, intermolecular forces, and Navier-slip boundary conditions, is constructed. By applying symmetry assumptions and a reduction formalism1 this model can be simplified into the following set of partial differential equations: ∂th+ (hu)x = 0, <(∂tu+ uux) = 4 h (hux)x − (φ(h)− hxx)x − 1 b u h , the so-called strong-slip equations (SSE). The function h in that equation describes the thickness of the thin liquid film and u is the averaged velocity. These equations non-dimensional slip-length b as one parameter. Slip refers to the possibility that the continuous velocity field of the fluid still has a non-zero value at a fluid–solid interface, i.e., fluid particles do not get stuck on the interface. Deviations from the no-slip condition, where the velocity at the interface is set to zero, are usually observed in microfluidic experiments on hydrophobic substrates at length scales of several hundred nanometers (Lauga et al. 2006). In this thesis the onset of singularities is studied in different ways. First a linearization of the SSE is computed and a long-wavelength instability is found. Then a numerical scheme, which is used to study the non-linear behavior of solutions to the SSE, is proposed and discussed in some detail. A characteristic feature of the numerical finite-difference scheme is the high spatial resolution due to the non-uniformity of the computational meshes. This property allows us tracking of solutions close to a singularity. Similar studies have been performed without slip by Miksis (1996) and Vaynblat (2001). Finally the SSE is further simplified and important properties of the rupture process are proven for a simplified equation. The procedure employed here is similar to previous work by Papageorgiou (1995) or Renardy (2001). Their results are generalized. The simplification procedure mentioned before allows us to establish a connection to LSW models of Ostwald ripening and to study properties of self-similar solutions such as the non-existence proof in the paper by Niethammer and Pego (1999). Namely, the long-wavelength approximation also known as the lubrication approximation or the slender-body theory. The main results found in this thesis are: • The effect of slippage is studied systematically with respect to singularity formation and transient self-similar solutions. • A numerical scheme that allows following the growth of physical singularities over many orders of magintude (in h) is developed. • The singularity formation is studied in a rigorous mathematical way. For example it is proven that singularities form within a finite time, their shape is characterized, and convergence to self-similar solutions is proven.
The Predictive Power of University Students’ Positive-Negative Moods in Their Psychological WellBeing

Bu calismanin amaci, universite ogrencilerinin pozitif ve negatif duygu durumlarinin psikolojik iyi oluslarini yordama gucunu incelemektir. Arastirmanin calisma grubunu Gazi Universitesi, Gazi Egitim Fakultesi ogrencilerinden, ulasilabilen ve gonullu olan 188 ogrenci olusturmaktadir. Pozitif-Negatif Duygu Olcegi (Watson, Clark, & Fellegen, 1988) ve Psikolojik Iyi-olus Olcegi (Ryff, 1989) veri toplama araci olarak kullanilmistir. Verilerin analizinde Pearson momentler carpimi korelasyon katsayisi ve regresyon analizi uygulanmistir. Arastirmanin sonuclari, pozitif duygularin sadece psikolojik iyi olus faktorlerinden digerleri ile olumlu iliskileri yordarken, negatif duygularin diger tum faktorleri yordadigini ortaya koymustur. Bu bulgular, universite ogrencilerinin psikolojik iyi oluslarini saglamayi hedeflerken pozitif-negatif duygu duzeylerinin de dikkate alinabilecegini gostermektedir. Bu ve diger sonuclarin literature uygunlugu tartisilmis, arastirmacilara ve rehberlik ve psikolojik danisma uygulayicilarina yonelik onerilerde bulunulmustur.
Spectroscopic investigation of the plasma in a hollow anode with an incorporated ferroelectric plasma source

Spectroscopic measurements are reported of the plasma formed inside a hollow anode (HA) with a ferroelectric plasma source (FPS) incorporated in it. The HA was used as a cathode in a diode supplied by an accelerating pulse (≤300kV, ≤400ns). It was found that the HA discharge (1.2kA, 10μs) is accompanied by the formation of a dense (≈8×1014cm−3) plasma layer at the surface of the FPS. This surface plasma serves as a practically unlimited source of electrons. In the bulk of the HA plasma the density is ≈3×1013cm−3 and it remains the same during the accelerating pulse whereas the plasma electron temperature increases from 4 to 11eV.
The constituents of Cistanche tubulosa (SCHRENK) HOOK. f. II, Isolation and structures of a new phenylethanoid glycoside and a new neolignan glycoside

A New phenylethanoid glycoside, named tubuloside E (I), and a new neolignan glycoside, dehydrodiconiferyl alcohol γ'-O-β-D-glucopyranoside (II), were isolated from the whole plants of Cistanche tubulosa (SCHRENK)HOOK. f. (Orobanchaceae), together with dehydrodiconiferyl alcohol 4-O-β-D-glucopyranoside (III), syringalide A 3'-α-L-rhamnopyranoside (IV), isosyringalide 3'-α-L-rhamnopyranoside (V), (+)-syringaresinol O-β-D-glucopyranoside (VI), (+)-pinoresinol O-β-D-glucopyranoside (VII), liriodendrin (VIII), 6-deoxycatalpol (IX), 8-epiloganic acid (X), 20-hydroxyecdysone (XI), 8-hydroxygeraniol 1-β-D-glucopyranoside (XII) and syringin (XIII). The structure of tubuloside E (I) was established as 2-(3, 4-dihydroxyphenyl)ethyl O-α-L-rhamnopyranosyl-(1→3)-2-O-acetyl-4-O-p-coumaroyl-β-D-glucopyranoside on the basis of chemical evidence and spectral data.
Carbon and nitrogen stable isotope ratio analysis of freshwater, brackish and marine fish from Belgian archaeological sites (1st and 2nd millennium AD)

Carbon and nitrogen stable isotope ratios were measured in 157 fish bone collagen samples from 15 different archaeological sites in Belgium which ranged in ages from the 3rd to the 18th c. AD. Due to diagenetic contamination of the burial environment, only 63 specimens produced results with suitable C : N ratios (2.9–3.6). The selected bones encompass a wide spectrum of freshwater, brackish, and marine taxa (N = 18), and this is reflected in the δ13C results (−28.2‰ to −12.9%). The freshwater fish have δ13C values that range from −28.2‰ to −20.2‰, while the marine fish cluster between −15.4‰ and −13.0‰. Eel, a catadromous species (mostly living in freshwater but migrating into the sea to spawn), plots between −24.1‰ and −17.7‰, and the anadromous fish (living in marine environments but migrating into freshwater to spawn) show a mix of freshwater and marine isotopic signatures. The δ15N results also have a large range (7.2‰ to 16.7‰) indicating that these fish were feeding at many different trophic levels in these diverse aquatic environments. The aim of this research is the isotopic characterization of archaeological fish species (ecology, trophic level, migration patterns) and to determine intra-species variation within and between fish populations differing in time and location. Due to the previous lack of archaeological fish isotope data from Northern Europe and Belgium in particular, these results serve as an important ecological backdrop for the future isotopic reconstruction of the diet of human populations dating from the historical period (1st and 2nd millennium AD), where there is zooarchaeological and historical evidence for an increased consumption of marine fish.
Comparative effect of the adjuvant capacity of Lactobacillus casei and lipopolysaccharide on the intestinal secretory antibody response and resistance to Salmonella infection in mice

A comparative study was carried out to determine the effect of Lactobacillus casei lipopolysaccharide (LPS) and a mixture of L. casei plus LPS used as oral adjuvants on the increase of mucosal immunity. The ability of these substances to protect against enteric infection was also studied. It was demonstrated that treatment with viable L. casei mixed with LPS and administered for 2 days was more effective than L. casei or LPS alone in increasing secretory IgA (S‐IgA) levels, the number of IgA‐producing cells and the total number of T‐lymphocytes. These effects were not observed when non‐viable L. casei were used with LPS. The study examined the duration of stimulation with L. casei, LPS or a mixture. S‐IgA levels were measured and the effect of boosting (carried out at 15 and 30 days post‐priming with a single dose) against infection with Salmonella typhimurium was determined. L. casei or LPS alone were demonstrated to maintain the IgA levels determined in intestinal fluid for 3 days. Such levels increased.
Structural Characteristics of Synthetic Amorphous Calcium Carbonate

Amorphous calcium carbonate (ACC) is an important phase involved in calcification by a wide variety of invertebrate organisms and is of technological interest in the development of functional materials. Despite widespread scientific interest in this phase a full characterization of structure is lacking. This is mainly due to its metastability and difficulties in evaluating structure using conventional structure determination methods. Here we present new findings from the application of two techniques, pair distribution function analysis and nuclear magnetic resonance spectroscopy, which provide new insight to structural aspects of synthetic ACC. Several important results have emerged from this study of ACC formed in vitro using two common preparation methods: (1) ACC exhibits no structural coherence over distances > 15 A and is truly amorphous; (2) most of the hydrogen in ACC is present as structural H2O, about half of which undergoes restricted motion on the millisecond time scale near room temperature; .
Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1−xTixO3 and (Na1/2Bi1/2)1−xBaxTiO3

Recent anelastic and dielectric spectroscopy measurements revealed new features of the phase diagram of PbZrTiO regarding the manner in which various ferroelectric and octahedral tilt instability lines approach each other. Rather than crossing, they tend to merge, also after considerable bending, and give rise to combined polar/tilt transitions over extended concentration ranges. The same effect is also found in (NaBi)BaTiO. It is proposed that such a behaviour results from cooperative coupling between the polar and tilt modes, and could be explained by a mechanism similar to that proposed by Holakowski in 1973, where coupling of two-order parameters with different symmetries produces a transformation of mixed character. The possible reasons are also discussed why disordered tilting, proposed to occur in correspondence with an elastic stiffening near the antiferroelectric/ferroelectric border in PZT, would be particularly difficult to reveal by diffraction.
Effect of cations on the growth of fluorescent pseudomonad isolates from spinach roots grown in soils with different salinity levels

Abstract Effect of Inorganic ion concentrations in culture solution on the growth of Pseudomonas putida and P. fluorescens Isolates from spinach roots grown in soils with high-salinity (H-soil) and low-salinity (L-soil) levels was investigated. Both H- and L-soils were taken from the topsoil of a greenhouse for spinach cultivation and a nearby fallow field, respectively. In the H-soil inorganic ions had accumulated due to the high rates of application of fertilizer. Among the ions, the concentrations of Ca2+, NO3 -, and SO4 2- in the H-soil were significantly higher than those in the L-soil. Among the inorganic ions tested (K+, Na+, Ca2+, Mg2+, Cl-, NO3 -, and SO4 2-), Ca2+ was found to be the most inhibitory on the growth of isolates. In addition, the isolates from the H-soil were more Ca2+-tolerant than those from the L-soil. Consequents the growth tolerance to Ca2+ stress of the total 80 isolates, 40 each from the H-soil and L-soil, was compared at 150 mM Ca2+. Most isolates from the H-soil showed a si.
Effect of backbone flexibility on the thermal properties of side-group liquid-crystal polymers

A new series of side-group liquid-crystal polymers, the poly[ω-(4-methoxybiphenyl-4‘-yloxy)alkyl acrylate]s, has been synthesized in which the spacer length is varied from 3 to 12 methylene units. The thermal behavior of the polymers has been characterized using differential scanning calorimetry and polarized light microscopy. All 10 homologues exhibit thermotropic liquid crystalline behavior. The glass transition temperatures decrease initially before reaching a limiting value as the spacer length is increased. This is attributed to a plasticisation of the backbone by the side groups. A small odd−even effect in the clearing temperatures is observed on increasing the spacer length in which the odd members display the higher values. The properties of these polymers are compared to the analogous polymethacrylate-based materials and also to the corresponding polymers containing 4-cyanobiphenyl as the mesogenic unit. This reveals that the structure of the liquid-crystal phase influences the glass transition t.
EXAFS investigation of uranium(VI) complexes formed at Bacillus cereus and Bacillus sphaericus surfaces

Uranium(VI) complex formation at vegetative cells and spores of Bacillus cereus and Bacillus sphaericus was studied using uranium LII-edge and LIII-edge extended X-ray absorption fine structure (EXAFS) spectroscopy. A comparison of the measured equatorial U-O distances and other EXAFS structural parameters of uranyl species formed at the Bacillus strains with those of the uranyl structure family indicates that the uranium is predominantly bound as uranyl complexes with phosphoryl residues.
Sugar beet yield and quality as affected by concentration of boron and methanol application.

The aim of this research is to assess the effect of foliar spraying with boron and methanol levels and time of methanol application. Two field experiments were conducted at EL-Haamoul district Kafer EL-Sheikh Governorate, Egypt during 2012/2013 and 2013/2014 seasons. Strip-plot design was used in both seasons. Main plot (vertical) allocated with Boron levels (0, 1 and 1.5 Kg/fed.) sub plot (horizontal plots) takes Methanol rates (15%, 30% and 45% v/v) this solution were sprayed overhead 3 times in two weeks intervals starting after 55 and repeated at 70 and 80 days from sowing with (zero, one, two and three times) were distributed in sub-sub plots. Obtained results indicated that addition boron on foliage as foliar spraying at rate of 1.5 Kg/fed. Significantly increased affected on the values of most characters under study i.e. root dimension, yields of root, top and sugar per fed. In additions to impurities (Na, K and α-N) and quality traits as sucrose and sugar losses percentages. On the other hand purity and extractability percentage gave the highest values with control treatments. This was true in both seasons. Application of methanol solution at level 45% take the mentioned trend of boron and gave the highest values 45% compared with level 15% which recorded the lowest values with purity and extractability percentages. Times of foliar applications of methanol on sugar beet leaves at three times recorded the highest values for most traits as boron and methanol levels except impurities content ( Na, K, α-N). alkalinity, purity, extractability% which recorded in significant effect on values of these traits in both seasons. Whereas, sugar losses% showed significant increase in the second season only, sugar extractable% and sugar yield (ton/fed.). Significant interaction effects were found between factors under study on some traits in both seasons.
Utilisation of pumice stone as support for the anaerobic treatment of vinasse with a fluidized bed reactor

Abstract This paper deals with the start‐up procedure and operation of an 0.63‐liter anaerobic fluidized bed reactor treating distillery wastewater and using pumice stone as support. Start‐up with addition of methanol gave a rapid organic degradation (90% COD). Six different hydraulic retention times (between 0.5 and 2.48 days) were studied, achieving a COD removal efficiency of 76.5–94.1% and biogas production rates of 0.28–12.31 m3.m‐3.d‐1. A simple and inexpensive, two end‐point alkalimetric method was used to get information about the stability of operation of the reactor.
Potent aroma volatiles in fresh loquat and its canned product

ビワ(田中種)の原料果実およびシラップ漬缶詰の減圧連続蒸留で得られた揮発性成分について,Aroma extract dilution analysis (AEDA)を用いたGas chromatography-olfactometry (GC-O)による,Flavor dilution factor (FD factor)の測定を行い,原料果実および缶詰製品の香気への寄与率の高い成分を探索した. 揮発性成分はGC-MS分析で78成分を同定した. 原料果実,缶詰の香気に寄与率の高い成分は,それぞれ15,19成分であった. 原料果実の香気に最も寄与率が高いと考えられる成分はPhenylacetaldehydeで,GC-Oではバラ様の香調であった. それに次ぐ成分は,Hexanal,(E)-2-Hexenal, Hexanoic acid,β-Iononeであった. 一方,缶詰製品の香気には,GC-Oではキンモクセイの花様の香調のβ-Iononeが最も寄与率が高いと考えられ,それに次ぐ成分はPhenylacetaldehydeとEugenolであった. 缶詰にすると(E)-2-Hexenalは消失した. ビワ缶詰は37°Cで3ヶ月間保存すると,β-IononeとPhenylacetaldehydeのFD factorが,それぞれ256と16となり,Furfural(GC-Oで鰹だし様の香調)は64まで増加した. Phenyl ethyl alcohol, Hexanal, Linaloolは消失することなく存在し,それぞれ,紅茶様,新鮮感を感じさせる緑の香り,果実らしさを感じさせる花様の香りに寄与していると考えられた.
Kinetics of Glucose-Induced Swelling of P(NIPAM-AAPBA) Microgels

Rapid swelling is a major advantage of microgels over bulky gels, and chemical-induced swelling has been expected to occur on the same time scale as physically induced swelling. As an example, the kinetics of the glucose-induced swelling of poly(N-isopropylacrylamide-co-3-acrylamidophenylboronic acid) (P(NIPAM-AAPBA)) microgel was studied by turbidity. This process occurs on a time scale of 102 s, while the temperature-induced (de)swelling of PNIPAM microgels was reported to occur in time regime from 100 ns to tens of milliseconds. The slow glucose-induced swelling was attributed to the slow reaction between glucose and phenylboronic acid (PBA) groups, which was identified as the rate-determining step for microgel swelling. The rate constant of this reaction was further determined under various conditions and compared with that obtained in solution, using 3-aminophylboronic acid as low molecular weight analogue. The reaction is accelerated when the microgels are in a swollen state, while it is retarded wh.
Nitrogen and calcium nutrition and fruit quality of commercial apple cultivars grown in Finland

Abstract During 1994–1995, field experiments were conducted in six apple orchards located in the southwest of Finland (the mainland and the Aland Islands). The cultivars were ‘Melba’, ‘Raike’, ‘Red Atlas’, ‘Lobo’, ‘Aroma’, and ‘Akero’. Fruit samples were picked at about one week before commercial maturity and stored for three to six months at 2 to 4°C and 85–95% relative humidity. During storage the percentage of physiological disorders was visually recorded. Fruit nitrogen (N) and calcium (Ca), firmness, diameter, juice titratable acidity (TA), and soluble solids concentrations (SSC) were determined at harvest. Nitrogen and Ca in the soil and leaves collected during fruit development were determined. The ranges in fruit N were 296–624 and Ca 27–68 mg kg‐1 fresh weight, and in the leaves N 15–23 and Ca 9–19 g kg‐1 dry matter. The N/Ca ratio was 5 and 16 and 0.9 and 2.3 in fruit and leaves, respectively. There was more variation between years in N and Ca contents of leaves than that of fruit. Other fruit q.