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Hydrodynamic Cavitation: An approach to Degrade Chlorpyrifos Pesticide from Real Effluent
Shrikant Bhausaheb Randhavane,Anjali K. Khambete 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.7
Chlorpyrifos (O,O-diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate) is a broad spectrum organophosphate pesticide whichis widely used in agriculture and residential pest control throughout the world. It is moderately toxic to humans, which persists innature for relatively long period due to its physicochemical and structural properties, low volatilization, affecting environmentalmatrices. Thus has been selected as model pollutant for degradation using hybrid treatment method of Hydrodynamic Cavitation(HC). It was found that Chlorpyrifos in real effluent sample can be degraded with orifice induced cavitating conditions. Effect ofvarious process parameters such as operating inlet pressure (over range of 3-8 bars), operating temperatures (with sets of intensecooling, moderate cooling and uncontrolled operation) and pH (natural pH = 10, neutral = 7 and acidic = 3) is investigated for extentof degradation of Chlorpyrifos. Results reflect that an optimum value of inlet pressure (5 bars) gave maximum removal/degradationof 72.7%, high temperature and acidic pH of 3 are suitable. To study the effect of intensification, ozone was used as an intensifyingagent. Ozone alone gave 12.2% degradation, but when combined with hydrodynamic cavitation, it resulted into 100% efficiency in45 minutes of treatment time. Work presented in this paper can be said to be concluding to the effective use of hydrodynamiccavitation in combination with ozone for the degradation of Chlorpyrifos in real wastewaters.
Sharp coefficient inequalities for certain subclasses of bi-univalent Bazilevi\v{c} functions
Amol Bhausaheb Patil 대한수학회 2022 대한수학회논문집 Vol.37 No.1
In the present paper, we introduce the subclasses $\mathfrak{B}_{1\Sigma}(\mu)$, $\mathrm{B}_{1\Sigma}(\mu,\gamma)$ and $\mathit{U}_{\Sigma}(\mu,\gamma)$ of bi-univalent Bazilevi\v{c} functions which are defined in the open unit disk $\mathbb{D}$. Further, we obtain sharp estimates on initial coefficients $a_2$, $a_3$, $a_4$ and also sharp estimate on the Fekete-Szeg\"{o} functional $a_3-k{a}_{2}^{2}$ for the functions belong to these subclasses.
Shital Kiran Davangere Padmanabh,Vishakha Bhausaheb Gangurde,Vikram Jhamb,Nasrin Gori 대한치과마취과학회 2024 Journal of Dental Anesthesia and Pain Medicine Vol.24 No.1
Background: The delivery of profound local anesthetics helps children receive successful treatment by reducing fear, anxiety, and discomfort during dental procedures. Local anesthetic injections are the most anticipated stimuli in dental surgery. Children's perceptions of pain can be altered by applying cryotherapy to precool the oral mucosa or by diverting their minds through taste distractions before administering local anesthetic injections. This study aimed to evaluate the efficacy of cryoanesthesia and xylitol sweet-tasting solution at the injection site in 7–10-year-old children. Methods: A total of 42 participants, aged 7–10 years, who underwent dental treatment requiring local anesthesia, were enrolled in the study. The children were randomly divided into three groups. In group I, sterile water was held in the mouth for 2 minutes before anesthetic administration, similar to group II, and in group III, a xylitol sweet-tasting solution was used for 2 minutes before needle insertion. The analysis of pain perception was carried out based on the Visual Analog Scale (VAS) and the Sound, Eyes, and Motor (SEM) scale. For VAS analysis, a one-way analysis of variance (ANOVA) was performed for intergroup comparison, and a post hoc Tukey test was performed for subgroup analysis. For the categorical SEM scale, the Kruskal–Wallis test followed by the post hoc test was performed for intergroup comparison. Where a P value of <0.05 was considered statistically significant at 95% confidence intervals. Results: Cryoanesthesia significantly reduced pain scores on VAS (4.21 ± 1.42) when compared to those on VAS with xylitol sweet-tasting solution (5.50 ± 1.40) and that with sterile water (6.14 ± 2.47). Intergroup comparison of the VAS scores among the three groups was performed using one-way ANOVA, which demonstrated statistically significant differences (P value <0.026) on the VAS scale. Intergroup comparison of the SEM scale was performed using the Kruskal–Wallis test, followed by post hoc comparison, which exhibited statistically significant differences (P < 0.007) among the three groups for the SEM scale. Conclusion: Cryoanesthesia demonstrated higher efficacy in reducing injection pain than that exhibited by the xylitol sweet-tasting solution.
Shelke, Sharad,Salunkhe, Nilesh,Sangale, Sandeep,Bhalerao, Swapnil,Naik, Nilesh,Mhaske, Ganesh,Jadhav, Ranjana,Karale, Bhausaheb Korean Chemical Society 2010 대한화학회지 Vol.54 No.1
일련의 불소화된 티아디아졸 3, 트리아졸 4, 그리고 옥사디아졸 5이 (2-(6-Methyl-2-P-tolyl-lH-imidazo[1,2-a]pyridin-3-yl)핵종을 가지고 있는 티오세미카르바지드로 부터 합성되어진다. 초음파조사 방법 뿐만 아니라 일반적인 방법에 의해 반응이 진행되었다. 모든 생성물들은 IR, 1H NMR, MS로 구조가 결정되었고, 이들 화합물의 항균활성을 스크닝하였다. The synthesis of a series of fluorinated thiadiazoles 3, triazoles 4 and oxadiazoles 5 are synthesized from thiosemicarbazides 2 containing (2-(6-methyl-2-p-tolyl-lH-imidazo[1,2-a]pyridin-3-yl nucleus. These reactions were carried out by conventional method as well as ultra sound irradiation method. All products have been characterized by IR, 1H NMR, MS study and screened for their antimicrobial activity.