Photocatalyst separation from aqueous dispersion using graphene oxide/TiO₂ nanocomposites

Szabo, T.,Veres, A.,Cho, E.,Khim, J.,Varga, N.,Dekany, I. Elsevier 2013 Colloids and surfaces. A, Physicochemical and engi Vol.433 No.-

A series of nanocomposite photocatalysts was prepared from aqueous dispersions of Degussa P25 TiO<SUB>2</SUB> and exfoliated graphite oxide (GO) by heterocoagulation. The structure and catalytic activity of samples in the photooxidation of phenol were characterized in line with their separability by controlled settling experiments at different pHs, irradiation times and mechanical exposure. It was found that single or few-layer graphene oxide sheets were dispersed uniformly in the matrix of titanium dioxide aggregates and were partially reduced to oxygen-containing graphene-like carbon. Although the presence of GO was associated with a loss of photocatalytic efficiency, it has induced an accelerated sedimentation of catalyst slurry as compared to pure TiO<SUB>2</SUB>, resulting in the complete separation of photocatalyst from the treated water in a highly reduced time scale. The loose physical network of weakly adhered particles can be destroyed by sonication or other strong mechanical impacts, but spontaneous aggregation occurs upon mild redispersion. Therefore, heterocoagulation is reversibly induced and can be used to collect the finely suspended catalyst particles worn off from the composite. Extensive reuse of the catalyst without its abrasion and the concomitant need of its post-treatment separation is thus possible. Along with the beneficial sedimentation properties of the composites, this facilitates their use for large scale treatment of waste waters.

IDENTITY AND CONSUMER PREFERENCES OF TRANSYLVANIAN HUNGARIANS

Annamária Sasné Grósz,Zoltán Veres 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07

This research was conducted to examine the national identity and consumer behavior of the Hungarian minority’s young generation in Romania3. We may use the results for interpreting groups as segments with different type and level of national identity and forming of marketing-mix that fits to their national identity consciousness.

Suction-enhanced siphon valves for centrifugal microfluidic platforms

Gorkin, Robert,Soroori, Salar,Southard, William,Clime, Liviu,Veres, Teodor,Kido, Horacio,Kulinsky, Lawrence,Madou, Marc Springer-Verlag 2012 MICROFLUIDICS AND NANOFLUIDICS Vol.12 No.1

Nighttime Chemical Transformation in Biomass Burning Plumes: A Box Model Analysis Initialized with Aircraft Observations

Decker, Zachary C. J.,Zarzana, Kyle J.,Coggon, Matthew,Min, Kyung-Eun,Pollack, Ilana,Ryerson, Thomas B.,Peischl, Jeff,Edwards, Pete,Dubé,, William P.,Markovic, Milos Z.,Roberts, James M.,Veres, American Chemical Society 2019 Environmental science & technology Vol.53 No.5

<P>Biomass burning (BB) is a large source of reactive compounds in the atmosphere. While the daytime photochemistry of BB emissions has been studied in some detail, there has been little focus on nighttime reactions despite the potential for substantial oxidative and heterogeneous chemistry. Here, we present the first analysis of nighttime aircraft intercepts of agricultural BB plumes using observations from the NOAA WP-3D aircraft during the 2013 Southeast Nexus (SENEX) campaign. We use these observations in conjunction with detailed chemical box modeling to investigate the formation and fate of oxidants (NO<SUB>3</SUB>, N<SUB>2</SUB>O<SUB>5</SUB>, O<SUB>3</SUB>, and OH) and BB volatile organic compounds (BBVOCs), using emissions representative of agricultural burns (rice straw) and western wildfires (ponderosa pine). Field observations suggest NO<SUB>3</SUB> production was approximately 1 ppbv hr<SUP>-1</SUP>, while NO<SUB>3</SUB> and N<SUB>2</SUB>O<SUB>5</SUB> were at or below 3 pptv, indicating rapid NO<SUB>3</SUB>/N<SUB>2</SUB>O<SUB>5</SUB> reactivity. Model analysis shows that >99% of NO<SUB>3</SUB>/N<SUB>2</SUB>O<SUB>5</SUB> loss is due to BBVOC + NO<SUB>3</SUB> reactions rather than aerosol uptake of N<SUB>2</SUB>O<SUB>5</SUB>. Nighttime BBVOC oxidation for rice straw and ponderosa pine fires is dominated by NO<SUB>3</SUB> (72, 53%, respectively) but O<SUB>3</SUB> oxidation is significant (25, 43%), leading to roughly 55% overnight depletion of the most reactive BBVOCs and NO<SUB>2</SUB>.</P> [FIG OMISSION]</BR>

Female and Domestic

Veree Kevalaku 이화여자대학교 아시아여성학센터 2008 이화여자대학교 아시아여성학센터 학술대회자료집 Vol.2008 No.7

Determinants of women’s enrollment into self-employment in Europe

Vered Kraus,Benny Bental,Yuval Yonay 한국사회학회 2018 한국사회학회 심포지움 논문집 Vol.2018 No.5

The Effect of Acupuncture Therapy on Pain Perception and Coping Strategies: A Preliminary Report

Dorit Gamus,Vered Meshulam-Atzmon,Shay Pintov,Rebecca Jacoby 사단법인약침학회 2008 Journal of Acupuncture & Meridian Studies Vol.1 No.1

The objective of the present study was to examine the effect of acupuncture on the perception of pain and coping strategies, thus focusing on the psychological aspects of pain. The study was conducted in two complementary and alternative medicine clinics of public hospitals. Forty-one patients scheduled for routine acupuncture therapy because of chronic musculoskeletal pain were recruited for the study to receive eight acupuncture treatments. Twenty-four patients completed the treatment schedule and filled two self-reported questionnaires before and after therapy: (1) Illness Perception Questionnaire—Revised (IPQ-R); and (2) Coping Strategies questionnaire (Brief COPE). A significant improvement was found in the following measures related to pain perception: timeline (chronic versus acute), treatment control, and personal control. Additionally, significant improvement was displayed in three measures related to coping strategies: positive reframing, religion, and venting. The results indicate that acupuncture therapy might be efficient in changing patient’s pain perception from chronic to acute and in enhancing their sense of personal and treatment control over their pain. In addition, acupuncture therapy partially improved coping strategies. The present study provides further validation for acupuncture therapy in pain and highlights its possible role in affecting the psychological aspects of pain. The objective of the present study was to examine the effect of acupuncture on the perception of pain and coping strategies, thus focusing on the psychological aspects of pain. The study was conducted in two complementary and alternative medicine clinics of public hospitals. Forty-one patients scheduled for routine acupuncture therapy because of chronic musculoskeletal pain were recruited for the study to receive eight acupuncture treatments. Twenty-four patients completed the treatment schedule and filled two self-reported questionnaires before and after therapy: (1) Illness Perception Questionnaire—Revised (IPQ-R); and (2) Coping Strategies questionnaire (Brief COPE). A significant improvement was found in the following measures related to pain perception: timeline (chronic versus acute), treatment control, and personal control. Additionally, significant improvement was displayed in three measures related to coping strategies: positive reframing, religion, and venting. The results indicate that acupuncture therapy might be efficient in changing patient’s pain perception from chronic to acute and in enhancing their sense of personal and treatment control over their pain. In addition, acupuncture therapy partially improved coping strategies. The present study provides further validation for acupuncture therapy in pain and highlights its possible role in affecting the psychological aspects of pain.

Oral and Pharyngeal Cancer Among the Arab Population in israel from 1970 to 2006

Zini, Avraham,Nasser, Nasser,Vered, Yuval Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2

Background: Israeli Arabs are considered as a developing society characterized by poverty and high levels of smoking among men. The purpose of this study was to describe their incidence, mortality and survival rates for oral and pharyngeal cancer between the years 1970-2006. Studies such as this in the Arab world, where the population is almost the same as the Arab population in Israel, are rare. Methods: The incidence and survival data were derived from all relevant registered data at the National Cancer Registry. The group of lesions included cancer of the lips, tongue, buccal mucosa, floor of the mouth, salivary glands, gums, palate and pharynx. Morphological description was according to WHO classification. Results: Most diagnosed patients were male. The mean age was 54.4 years, and mean years of survival were 3.83. The oropharynx was the most common site (28.3%) while the palate was the least frequent (3.12%). Squamous cell carcinoma (SCC) was the most common histological feature (66.3%), while basal cell carcinoma (BCC) was the least (3.9%). The overall 5 years survival rate was 59.4%, this being highest for BCC (82.1%), while SCC was significantly lower (56.2%) (p<0.001). Lip cancers survived better than other sites. Conclusions: Data from this society are similar to other developing societies in the majority of the results. The incidence of oral and pharyngeal cancer is lower among the Arab population, in comparison to the Jewish population in Israel.

Got of the Earth

Lee Young-gul(번역자),Janice Vere Hilburn(번역자) The Academy of Korean Studies 1974 Korea Journal Vol.14 No.1

Curcumin Promotes Primary Oral Wound Healing in a Rat Model

Liat Chaushu,Marina Rahmanov Gavrielov,Gabi Chaushu,Keidar Zar,Marilena Vered 한국식품영양과학회 2021 Journal of medicinal food Vol.24 No.4

Curcumin is known as an anti-tumor, anti-aging, and wound healing promoter. The aim this study was to examine the effect of 2% curcumin paste application on primary wound healing in a palatal rat model. A mid-crestal incision was initiated on the maxillary alveolar ridge. A full thickness flap was raised on either side of the incision and was then repositioned and sutured. Experimental groups consisted of 2% curcumin (Cur), orabase (O), cut only (C), and intact control—no incision, no paste (N). Curcumin 2% and orabase were applied postoperatively every 12 h for 3 consecutive days. Rats were equally killed after 1 and 2 weeks. Histological data included—epithelial gap, inflammatory infiltrate, myofibroblasts, epithelial and connective tissue stem cell-related markers. Data were collected at two time points—1 and 2 weeks. There was no residual epithelial gap 1 week from incision in the Cur and O group vs. residual gap in the C group (P = .031). Curcumin 2% was associated with upregulated expression of epithelial-related markers (P < .05) although not statistically significant compared with orabase alone. Upregulation of connective tissue-related markers (P < .05) was unique to curcumin 2%. Curcumin promotes epithelial gap closure in a primary wound healing model in rats, possibly through upregulation of connective tissue stem cells leading to further epithelial differentiation and proliferation. Tel-Aviv University Animal Care Committee (approval Number: 01-16-031).