melting a mixture of pure Bi, Sb, Te and Se ( = 99:99% purity). The raw material was sealed into a fused silica tube with argon gas ﬁlled. Then, the raw material was melted at 923 K for 1 hour using a rocking furnace. The single roller melt-spinning technique was then employed using this ingot to obtain a rapidly solidiﬁed foil. A copper roller of 400 mm in diameter was rotated at a rotation speed of 10.5 ms 1
Fig. 11, where the surface tension in the Ag-In system is higher than those in other systems. The relationship between the surface and bulk compositions is also calculated as shown in Fig. 12. It can be seen that there is surface segregation of Bi, Sb, In, Sb and Bi in the Ag-Bi, Ag-Sb, Ag-In, In-Sb and In-Bi liquid alloys, respectively. The calculated surface tensions for the In-Ag-Bi and In-Ag-Sb systems at 800 C are
maximum figure of merit can be observed in the compo- sition with x = 0.5. Moreover, to reduce the concentration of holes an excess of tellurium which is a donor is added. The value of the Seebeck coefficient for the optimum single crystal composition is in the range of 200 - 210 μ V/K. For nanostructured samples of the same composi- tion the Seebeck coefficient is much larger 230 - 240 μ V/K. Taking into consideration the very slight change of the scattering parameter r, discussed above, this change can be attributed to donor effect of IPD. There- fore, the best properties for nanostructured samples are to be achieved with a larger content of Sb in comparison with a single crystal, and as Figure 15 shows, the nanos- tructured samples with composition Bi 0.4 Sb 1.6 Te 3 possess
Time-reversal symmetry breaking in the topological sur- face state of a topological insulator (TI) results in the massless Dirac fermions acquiring mass [1–3], giving rise to exotic physical phenomena such as the quantum anomalous Hall (QAH) effect  and axion electrodynamics . Magnetic TIs, i.e., magnetically doped and long-range ordered TIs, can host these states, and the QAH has been experimentally observed in Cr- and V-doped (Bi,Sb) 2 Te 3 [6–8]. To raise
In this study, we use ITO glass to deposit thermoelectric thin films by using electrochemically deposition method. With electrochemical deposition, we deposit Te-Bi-Sb thin films on ITO glasses, trying to probe into different influences on thermoelectric characteristics by changing Sb 3+ consistency and current density. The finished Te-Bi-Sb thin films will be observed by Scanning Electron Microscope (SEM) to realize the microstructure, also, be identified the crystal structure with XRD, and electrical analysis. The result finds out the thin film is a P-type thermoelectric material. Owing to the variation of current density or electrolyte density affects and changes the structure of Te-Bi-Sb film, the study categorizes three types of forming structures: Ball-type, Mixed-type, and Acicular-type; the ion content of the precipitated film can be controlled by alter current or electrolyte density. Good thermoelectric material requires high Seebeck coefficient, and the best one in the study is in the condition of 38mM-2.1mA/cm 2 , which results in 32.89μV/K. Also, power factor is a criterion to evaluate a material, and bigger factor equals to better quality. In this study, we get the best power factor in the condition of 15mM-2.1 mA/cm 2 , with the result of 49.5505α 2 /ρ.
#1 to #4 are excellent. Major differences which occur for the liquidus and solidus pertain to the rhombohedral-(Bi, Sb) phase in Sections #5 to #8, as seen from Figs. 12 through 15. However, a previous study on the Bi–Sn binary system 26) sug- gested the diffusion rate in the rhombohedral-(Bi, Sb) solid solution is not very high, and most investigators 17) have found it necessary to perform heat treatment for long periods to equilibrate its alloys. It is thus reasonable to assume that obvious undercooling may be involved in the cooling DTA measurements of the related alloys by Peretti. 17) It is suffi-
based system has layered structure and according to their compositions, it has three different phases: Bi-(2201), Bi-(2212), and Bi-(2223)  . The Bi-2223 phase seems to dominate in all the three systems in spite of the fact that single-phase formation is very difficult. However, it has been reported that Pb doping at Bi-sites pro- motes the formation of single Bi-2223 phase and leads to higher T c values by inducing a partially melted liquid
Dry matter intake was not different across experimental diets (Table 3). Feeding heat-processed SB products (RSB or ESB) vs. SBM resulted in varied DMI in dif- ferent research studies. Several studies reported increase (Anderson et al., 1984; Giallongo et al. 2015) and/or no changes (Amanlou et al., 2012; Júnior et al., 2017; Sadr- Arhami et al., 2019) in DMI for cows fed heat-processed SB products vs. SBM. However, our results are in line with Mohamed et al. (1988) and Sadr-Arhami et al. (2019) who reported no differences in DMI between heat-processed SB products and SBM. The lack of ef- fect of the treatment on DMI was attributed to no changes in meal size or inter-meal interval among diets as substantiated by Sadr-Arhami et al. (2019). In several studies (Guillaume et al., 1991; Bailoni et al., 2004; Amanlou et al., 2012) there was no difference in DMI between RSB and ESB. Overall, in the present experi- ment, the mean DMI was 22.0 kg/d, or approximately 4.1% of mean BW, being within the anticipated range for dairy cows producing > 35 kg/d of milk (NRC, 2001). Actual milk (37.5 kg/d) and 3.5% fat-corrected
(4) -continuous function if f -1 (V) is -closed in X for every closed set V in Y (5) w-continuous function if f -1 (V) is w-closed in X for every closed set V in Y (6) g*- continuous function if f -1 (V) is g*-closed in X for every closed set V in Y (7) Sb*- continuous function if f -1 (V) is Sb*-closed in X for every closed set V in Y
Even though the evolution of store brands (SBs) is a very important topic for scholars, the attention that it has received from researchers is still insufficient. The most of academic research has not approached the SB phenomenon from a branding perspective but, mainly, from the perspective of retailers [Raju et al. 1995; Gedenk and Neslin 1999; Ailawadi and Harlam 2004], manufacturers [Hoch 1996; Rajiv et al. 2002], consumers [Baltas and Argouslidis 2007; Ailawadi et al. 2008], or from the competitive interactions between them [Sethuraman 1996; Bonfer and Chintagunta 2004]. The presented research project aims at generating new insights from the branding perspective view, therefore filling knowledge gaps concerning this matter.
4-Phenyl-o-tolunitrile (II), 4-phenylphthalonitrile (III), 4-phenylpthalimide (IV), 4-phenylbenzonitrile (V), car- bon dioxide, unreacted I, oxygen and the diluent gas nitrogen were determined by gas chromatography in the products of the reaction of 4-phenyl-o-xylene (I) ammoxidation on the V–Sb–Bi–Zr/γ-Al2O3-oxide catalyst. The reaction gases were successively passed through a 1,4-dioxane-filled trap for absorption of nitriles, and III and sulfuric acid-filled trap for absorption of ammonia. The concentration of ammonia at the reactor outlet was determined, by titration of unreacted sulfuric acid from the second trap. The carrier-gas (nitrogen) flow rate was 80 mL/min. The sample injection temperature was 353 K, and the temperature programming rate was 20 K/min.
Based on the results, several suggestions can be provided. Firstly, some participants developed negative attitudes towards the concept of SB. From this point of view, the studies can be designed to help students develop positive attitudes towards the benefits of technology. Secondly, studies can be conducted on student roles in educational models that are presented with technology. Thirdly, studies and activities can be carried out for the effective use of SB in the courses. Lastly, research studies can be planned on how to integrate educational technologies such as SB into teaching environments.
structure consisting of two fused six-member aromatic rings, a benzene ring and pyrimidine ring. Quinazoline is a compound made up of two fused six-member aromatic rings, a benzene ring and a pyrimidine ring. Quinazoline is a fused bi-cyclic compound earlier known as benzo-1,3-diazine was first prepared in the laboratory by Gabriell. Depending upon the position of the keto or oxo group, these compounds may be classified into three types including 4(3H)-quinazolinone, 2(1H)quinazolinone and 2,4 (1H,3H)-quinazolinedione, of the three quinazolinone structures 4(3H)-quinazolinone are most prevalent, either as intermediates or as natural products in many proposed bio synthetic pathways.
Chemicals and samples. A sample of an off-flavour soft drink with strawberry flavour (composition: natural mineral water, sugar, flavouring, citric acid, SB, ascorbic acid), which was subjected to consumers’ complaints, was obtained from a Czech manufac- turer together with a control sample; with the same strawberry flavour and composition, but without any sensory defects, and eight samples of SB (synthetic origin, declared purity min. 99%, production year 2015) (Donauchem and Brenntag CR, Czech Repub- lic). The standards of SB (> 99%), 4-phenyltoluene (syn. 4-methyl-1,1'-biphenyl, 98%), biphenyl (≥ 99%), and n-alkanes (C8-C20, used for retention index calculations) were purchased from Sigma-Aldrich (Czech Republic). Ethanol (p.a., 96%) was purchased from Penta (Czech Republic).
metals. Lead and copper were readily scrubbed from the TBP and a scrubbed value of 95% was obtained over the whole range of HCl concentrations. Bismuth also showed a higher scrubbing value of 90% and similarly 85–94% of Zn was scrubbed while increasing the HCl concentrations. On the contrary, As was scrubbed well at 2.0 mol/L HCl, but with a increas of HCl concentration to 10.0 mol/L the scrubbing value rapidly decreased to 11.7%. About 55% of antimony was scrubbed at 0.5 mol/L HCl, and with increasing HCl value to 2.0 mol/L, the scrubbing also decreased gradually to 33% and ﬁnally there was hardly any diﬀerence in the scrubbing value with a further increase of HCl concentration from 5.0 to 10.0 mol/L. Similarly, Sn showed 65% of scrubbing at 0.5 mol/L HCl; but with a further increase in HCl concentration, it also decreased gradually to 6% at 8.0 mol/L, which was the lowest value. Hence, from the above observations, it was concluded that the scrubbing of Pb, Bi, Zn, Cu and Sb from the loaded organic phase were comparatively eﬀective at the 8.0 mol/L HCl concentration, whereas arsenic was more eﬀectively scrubbed at 4.0 mol/L HCl.
structure that may form for Ae ) Ca - Ba (and Eu) and Pn ) As - Bi. It is important to establish the correct stoichiom- etries, the related properties, and the theoretical reasons for these findings. The structure type contains only well sepa- rated Pn atoms and does not offer any suggestion of Pn - Pn bonding. Thus, if these compounds are Zintl (valence) phases, then electron conservation would require a stoichiometry and oxidation states of (Ae + 2 )