In this study, the aromatic carbon content of epoxy resin (EP) increased via carbon tar pitch (CTP) modification, and the CTP occurred self-polymerization reaction. The carboxyl and hydroxyl groups of CTP and the hydroxyl and carboxyl groups of EP occurred chemical cross-linking reaction. CTP and graphitization treatment promoted EP CF carbon crystal growth. The graphitization degree of pure EP CF and 40 wt% CTP modified EP CF are 8.42% and 44.21%, respectively. With the increase CTP content, the cell size, ligament junction and density of graphitization modified EP CF gradually increased, while the number of pores and cells gradually decreased. The cell size, ligament junction size and density of 40 wt% CTP modified graphitization EP CF increased to 1200 μm, 280 μm and 0.5033 g/cm3, respectively. EP CF exhibits entangling carbon ribbon and isotropic amorphous carbon. The 40 wt% CTP modified EP CF is composed of evenly distributed amorphous resin carbon and graphite domain CTP carbon. The graphitization modified EP CF improved electrical conductivity, and the electrical conductivity of 40 wt% CTP modified EP CF is 126.6 S/m. The compressive strength can be decided by EP carbon strength and its char yield, and graphitization 40 wt% CTP modified EP CF reached 4.9 MPa. This study provides some basis for preparation and application of CTP modified EP CF.

Food waste is a critical problem for many countries. Food producers and groceries often discard imperfect foods or food by-products that still contain nutritional value. To address this problem, some food manufacturers have turned to upcycling, that is, to convert otherwise discarded ingredients into new food products (e.g., cacao fruit pulp into crunch bites). Consumers’ acceptance of sustainable products is generally lower than that of conventional products due to quality concerns. We speculate that for upcycled food products, consumers’ perception of product quality may vary when different percentages of imperfect ingredients are integrated into the products. Drawing from schema congruity theory, this research examines how the usage of imperfect ingredients can impact the perceived quality of upcycled food products. The implications for marketing upcycled foods are discussed.

CNTs/Al-Li composite was first prepared by hot-pressed sintering from Al-Li alloy powder and CNTs solution, and then the hot compression tests were performed on MMS-100 thermal simulator at strain rate range of 0.01– 10 s− 1, deformation temperature range of 350–500 °C, and total deformation amount of 60%. True stress–strain curves were plotted, and constitutive equation as well as hot processing maps were successfully confirmed based on Arrhenius constitutive model and Prasad instability criterion. Results show that CNTs/Al-Li composite have a very poor hot deformation ability and narrow processing region, which is strain rate range of 0.1–1 s− 1 and deformation temperature range of 360–400 °C. Hot extrusion experiment was carried out and the processing parameters were selected according to the established hot processing map, and an improvement on strength and a good balance between strength and plasticity can be obtained, which is about 650 MPa for tensile strength and 9% for elongation.

To build a highly active photocatalytic system with high efficiency and low cast of TiO2, we report a facile hydrothermal technique to synthesize Ag2Se-nanoparticle-modified TiO2 composites. The physical characteristics of these samples are analyzed by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy and BET analysis. The XRD and TEM results show us that TiO2 is coupled with small sized Ag2Se nanoplate, which has an average grain size of about 30 nm in diameter. The agglomeration of Ag2Se nanoparticles is improved by the hydrothermal process, with dispersion improvement of the Ag2Se@TiO2 nanocomposite. Texbrite BA-L is selected as a simulated dye to study the photodegradation behavior of as-prepared samples under visible light radiation. A significant enhancement of about two times the photodegradation rate is observed for the Ag2Se@TiO2 nanocomposite compared with the control sample P25 and as-prepared TiO2. Long-term stability of Ag2Se@TiO2 is observed via ten iterations of recycling experiments under visible light irradiation.

Herein, a series of g-C3N4 modified Bi2MoO6 nanocomposites using Bi2MoO6 and melamine as original materials are fabricated via sintering process. For presynthesis of Bi2MoO6 an ultrasonic-assisted hydrothermal technique is researched. The structure and composition of the nanocomposites are characterized by Raman spectroscopy, X-ray diffraction (XRD), and high-resolution field emission scanning electron microscopy (SEM). The improved photoelectrochemical properties are studied by photocurrent density, EIS, and amperometric i-t curve analysis. It is found that the structure of Bi2MoO6 nanoparticles remains intact, with good dispersion status. The as-prepared g-C3N4/Bi2MoO6 nanocomposites (BMC 5-9) are selected and investigated by SEM analysis, which inhibits special morphology consisting of Bi2MoO6 nanoparticles and some g-C3N4 nanosheets. The introduction of small sized g-C3N4 nanosheets in sample BMC 9 is effective to improve the charge separation and transfer efficiency, resulting in enhancing of the photoelectric behavior of Bi2MoO6. The improved photoelectronic behavior of g-C3N4/Bi2MoO6 may be attributed to enhanced charge separation efficiency, photocurrent stability, and fast electron transport pathways for some energy applications.

Sperm cryopreservation is an important method of assisted reproductive techniques and storing genetic resources. It plays a vital role in genetic improvement, livestock industrial preservation of endangered species, and clinical practice. Consequently, the cryopreservation technique is well organized through various studies, especially on Korean native cattle (Hanwoo). However, the cryopreservation technique of Korean native brindled cattle, which is one of the native cattle species in Korea, is not well organized. Therefore, it is necessary to develop a Supplementary Table technique for the cryopreservation of Korean native brindled cattle. For this purpose, it is important to first evaluate the quality of the currently produced cryopreserved sperm of Korean native brindled cattle. In this study, we randomly selected 72 individual Korean native brindled cattle semen samples collected from 8 different region research centers and used them to evaluate sperm functions. We focused on the quality evaluation of cryopreserved Korean native brindled cattle semen following the measurement of motion kinematics, capacitation status, intracellular ATP level, sperm motility, and cell viability. Then, the values of each of the eight groups were derived from various sperm parameters of nine individual samples, including sperm motility, kinematics, cellular motility, and intracellular ATP levels, which were used to compare and evaluate sperm function. Overall, differences in various sperm parameters were observed between most of the research centers. Particularly, the deviations of motility and motion kinematics were high according to the sample. Therefore, we suggest that it is necessary to develop a standard method for the cryopreservation of Korean native brindled cattle semen. We also suggest the need for sperm quality evaluation of the cryopreserved semen of Korean native brindled cattle before using artificial insemination to attain a high fertility rate.

21세기 이래, 중국은 ‘교육 강국’이라는 구호를 내걸고 국가와 정부 는 교육 사업을 우선적으로 발전시키고 있다. 중국은 9년제 의무교육 을 실시하고 공립초등학교는 국가에서 전액 지원하고 있다. 그러나 사립초등학교는 독립적으로 운영되며 중소학교교육의 불가결의 일부 분이다. 이는 공립학교의 스트레스를 완화시켰을 뿐만 아니라 학교운 영의 특색도 형성하였다. 중국에서는 공립ㆍ사립 초등학교가 모두 입 시 위주의 교육 아래 같은 응시 과정을 실시한다. 그러나 법에 의해 설립된 교육기구로서 중국의 사립초등학교는 국가의 전액재정보조가 없기에 독립적인 관리, 독립적인 모집과 교직원 관리가 필요하다. 공 립초등학교 교원과 비교할 때 작업강도가 높고 사회적 지위와 인정 도가 낮기 때문에 중국 사립 소학교의 교원은 일반적으로 불안정하 다. 이 연구는 중국 강서성의 5개 사립초등학교 교사 360명을 대상으 로 341개의 유효한 표본을 수집했다. 본 연구는 <초등학교 교사 직 업행복감>을 측정도구로 사용하였다. 조사 데이터를 기초로 본 연구 는 강서성 사립초등학교 교사들의 직업 행복감의 현황과 사립초등학 교 교사들의 직업 행복감에 영향을 미치는 다른 차원 총체적 특징을 분석했다. 연구결과에 대한 데이터분석을 통해 중국 사립 초등학교 교사들의 사회지지와 자아실현의 어려움이 교원직업의 행복체험에 영향주고 있다는 것을 알 수 있었다. 그 결과를 보면 중국에서 사립 초등학교 여자 교사의 직업 행복감이 남자 교사보다 높았고, 청년 교 사의 직업 행복감이 교사 연령이 긴 교사보다 높았음을 알 수 있다. 문학, 수학, 영어 과목은 초등학교 주요 시험 과목이다. 3개 주요 시 험 과목의 교사들은 사회적 지원을 받기 때문에 상대적으로 직업 행 복도가 높게 나타나고 있다. 연구결과에 근거하여 다음과 같은 대책을 제기한다. 첫째, 사회에 대한 인식을 전환하고 사립초등학교 교원의 사회적 지위를 제고시켜 야 한다. 둘째, 사립 초등학교는 자기의 독특한 학교 운영 특성을 수 립할 때 교원의 주체역할을 강화하고 교원의 관리역할을 충분히 발 휘시켜야 한다. 셋째, 사립 초등학교 교원에 대한 관심을 강화해야 한다. 학교 관리자들은 인문 배려를 통해 교원의 수요를 만족시키고 교원의 친근감과 학교에 대한 귀속감을 제고해야 한다. 남녀 교사, 청년 교원, 수업 연한이 긴 교원 및 각 학과 교원에게 적합한 직업발 전환경을 제공해야 한다.

As goods and services powered by AI continue to proliferate, scholarly opinion seems to consider that current WTO law is insufficient to regulate trade in AI-powered products. The following reasons can help explain this perceived insufficiency of the WTO law: (a) AI-powered products are difficult to categorise within the perceived goods/services dichotomy under WTO law, thus causing uncertainties as to the applicable legal regime; and (b) the WTO law has yet to respond to the need for national governments to strike a balance between trade and controversial trade practices regarding AI-powered products. This paper argues that while current WTO law is far from perfect, it does partly regulate trade in AI-powered products. The following observations substantiate the partial regulation of trade in AI-powered products by the WTO law: (a) AI-powered products cannot escape existing WTO disciplines on trade in goods and trade in services, by virtue of either the involvement of AI or the perceived goods/services dichotomy; and (b) efforts to balance trade/non-trade interests associated with trade in AI-powered products are allowed under the GATT/GATS’ ‘public morals’ and security exceptions.

People prefer a certain gain over an uncertain one (e.g., Kahneman and Tversky 1979; Gneezy, List, and Wu 2006), and uncertainty threatens the perception of personal control (e.g., Simonsohn 2009; Sonsino 2008; Gaucher, Hafer, Kay, & Davidenko, 2010). Nevertheless, research has also showed that under certain circumstances people love uncertainties as “surprises” can add unexpected pleasures to our life (Goldsmith and Amir 2010; Shen, Fishbach, and Hsee 2015). In this research, we examine consumers’ preference for surprise in the subscription services. A typical subscription business offers a “surprise-me” option, where customers receive the package without knowing what items are included, in addition to (or instead of) customers making their own selections (referred to as the “self-selection” option hereafter). Despite the surging popularity of this business model, little is known whether consumers prefer making their own selections or are willingly let providers surprise them. Theoretically, it offers an opportunity to examine consumers’ willingness to relent their control in choice when there are risks involved. Managerially, answers to these questions can help service providers better design the surprise-me option for both operational efficiencies and customer satisfactions. Our key hypothesis is that a sense of personal control is an important condition for consumers’ preference of the surprise-me option in subscription services. Feeling of control serves as a safeguard and thus allows consumers to attend to the pleasures of uncertainty. This also means that in situations where consumers do not feel in control, their preference for the surprise-me option decreases (relative to the in-control condition). This is because, the compensatory control theory (Whitson & Galinsky, 2008; Kay et al., 2008; 2009) suggests that when consumers feel not in control, they tend to compensate by trying to take things into their own hands (e.g., self-select) to regain control rather than relenting control to others (e.g., to be surprised). However, when it is difficult to regain control through self-selection due to choice difficulty (e.g., lack of topical knowledge), they may again prefer surprise as a way to simply delegate the choice (Aggarwal and Mazumdar 2008; Steffel and Williams 2017). Thus, we expect feeling of control to play an important role in preference of a surprise-me option. We conducted three studies to test this prediction. Overall, the set of studies supported the expected important role of feeling of control. The surprise option is valued only when consumers do not lack the sense of control hence do not need to regain it through choice or the chance of regaining control through choice is low due to choice difficulty (expertise or product assortment characteristics). Our research provides important theoretical contributions.

In this paper, we investigate whether and how morality irrelevant inspiration can influence consumer’s own morality behavior. Thrash & Elliot (2003) conceptualized inspiration as a psychological construct with three core characteristics: evocation, transcendence, and motivation. Morality behavior include prescriptive morality (e.g., prosocial behavior) and proscriptive morality (e.g., immoral behavior), which have different antecedents. We propose a common antecedent for both faces of morality and found that morality-irrelevant inspirational experiences (triggered by others or oneself) could decrease proscriptive morality and increase prescriptive morality, via emotional and cognitive transcendence. This is the first paper to explore the roles played by the emotional and cognitive transcendence resulted from the inspirational experiences and the consequences of transcendence on a source-irrelevant context.

Large-size graphene samples are successfully prepared by combining ultrosonic assisted liquid phase exfoliation process with oxidation-deoxidation method. Different from previous works, we used an ultrasound-treated expanded graphite as the raw material and prepared the graphene via a facile oxidation-reduction reaction. Results of X-ray diffraction and Raman spectroscopy confirm the crystal structure of the as-prepared graphene. Scanning electron microscopy images show that this kind of graphene has a large size (with a diameter over 100 μm), larger than the graphene from graphite powder and flake graphite prepared through single oxidation-deoxidation method. Transmission electron microscopy results also reveal the thin layers of the prepared graphene (number of layers ≤3). Furthermore, the importance of preprocessing the raw materials is also proven. Therefore, this method is an attractive way for preparing graphene with large size.

This paper aims to contribute to the existing literature about social influence on products purchase intention. Specifically, it focuses on social influence among young adults’ purchase intention for luxury products, through investigation about Macau young adults consumption culture. Three types of social influence (informational influence, utilitarian influence, and value-expressive influence) are examined in this study. In terms of product conspicuousness, two types of luxury products can be identified based on the degree to which products usage is performed in public versus private. Hypotheses include that informational influence, utilitarian influence, and value-expressive influence will be significantly and positively related to consumer purchase intention for luxury products, both publicly and privately consumed. A convenient sample of 120 Macau young adults aged 18 to 24 participated in this study. The result of Regression and Analysis of Variance indicated that consumers have been affected by different types of social influence when they purchase different types of luxury products. Value-expressive influence is significantly and positively related to purchase intention for public products. Moreover, both informational influence and value-expressive influence are significantly and positively related to purchase intention for private luxury products. However, the effects of utilitarian influence are insignificant to both public and private luxury products, which are contrary to the hypotheses specified in this study and surprising findings about contemporary Chinese culture. Additionally, female has higher intention to buy luxury products. Based on the results of this study, marketing implications and managerial insights in the luxury retail market are recommended accordingly. Future research can provide a more comprehensive perspective of social influence than the exploratory one offered in the present study.

When an alloy such as Ni-W is liquid phase sintered, heavy solid W particles sedimentate to the bottom of the container, provided that their volume fraction is less than a critical value. The sintering process evolves typically in two stages, diffusiondriven macrosegregation sedimentation followed by true sedimentation. During macrosegregation sedimentation, the overall solid volume fraction decreases concurrently with elimination of liquid concentration gradient. However, in the second stage of true sedimentation, the average solid volume fraction in the mushy zone increases with time. It is proposed that the true sedimentation results from particle rearrangement for higher packing efficiency.