http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Laleh Faraji,Saadi Samadi,Khosrow Jadidi,Behrouz Notash 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.7
The small library of new enantiomerically pure (S,S)-diamino alcohols 1 and their hydroxyldiamide precursors 2 were conveniently synthesized on a gram scale from inexpensive and commercially chiral pool amino acids. The catalytic and induced asymmetric effects of the chiral ligands 1 in the asymmetric allylic oxidation of cycloolefins were investigated.
Laleh Mehryar,Mohsen Esmaiili,Fariba Zeynali,Rohollah Sadeghi,Mehdi Imani 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.3
In this study, the effect of different defatting conditions on heat stability of confectionary sunflower protein isolate (SnPI) and the particle size of the produced nanoparticles was investigated. The evaluated factors included temperatures of defatting (40, 50, and 60 C), time of defatting (2, 6, and 10 h), and the amount of activated carbon (0, 25, and 50% of sample weight). The results of the central composite design showed a significant effect (P\0.05) among the studied factors, where denaturation temperature and particle size of SnPI nanoparticles were found to be in the ranges of 75.05–89.12 C and 268–1594 nm, respectively. Moreover, the interaction of activated carbon with temperature and time of defatting proved to be influential factors for the heat stability of confectionary SnPI.
Faraji, Laleh,Samadi, Saadi,Jadidi, Khosrow,Notash, Behrouz Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.7
The small library of new enantiomerically pure (S,S)-diamino alcohols 1 and their hydroxyldiamide precursors 2 were conveniently synthesized on a gram scale from inexpensive and commercially chiral pool amino acids. The catalytic and induced asymmetric effects of the chiral ligands 1 in the asymmetric allylic oxidation of cycloolefins were investigated.
Hassani, Laleh,Dehdari, Tahereh,Hajizadeh, Ebrahim,Shojaeizadeh, Davoud,Abedini, Mehrandokht,Nedjat, Saharnaz Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.3
Background: Given that there are many Iranian women who have never had a Pap smear, this study was designed to develop and validate a measurement tool based on the Protection Motivation Theory to assess factors influencing the Iranian women's intention to perform first Pap testing. Materials and Methods: In this psychometric research, to determine the Content Validity Index (CVI) and the Content Validity Ratio (CVR), a panel of experts (n=10) reviewed scale items. Reliability was estimated through the Intraclass Correlation Coefficient (n=30) and internal consistency (n=240). Also, factor analysis (exploratory and conformity) was performed on the data of the sample women who had never had a Pap smear test (n=240). Results: A 26-item questionnaire was developed. The CVI and CVR scores of the scale were 0.89 and 0.90, respectively. Exploratory factor analysis loaded a 26-item with seven factors questionnaire (perceived vulnerability and severity, fear, response costs, response efficacy, self-efficacy, and protection motivation (or intention)) that jointly accounted for 72.76% of the observed variance. Confirmatory factor analysis indicated a good fit for the data. Internal consistency (range 0.70-0.93) and test-retest reliability (range 0.72-0.96) of sub-scales were acceptable. Conclusions: This study showed that the designed instrument was a valid and reliable tool for measuring the factors influencing the women's intention to perform their first Pap testing.
Necrosis of intact premolar caused by an adjacent apical infection: a case report
Saeed Asgary,Laleh Alim Marvasti 大韓齒科保存學會 2013 Restorative Dentistry & Endodontics Vol.38 No.2
Although periapical inflammatory lesions are usually resulted by infection in the root canal system, this rare case showed that a periapical lesion related to an infected tooth may cause pulpal necrosis in adjacent intact tooth, with no history or clinical signs of caries, disease, trauma or developmental anomaly. This case also suggests that the periapical lesion can be treated conservatively, without surgical intervention. Furthermore, this case highlights the importance of prompt treatment of apical periodontitis before the lesion becomes extensive as well as follows up of large lesions.
Jamshid Behin,Laleh Rajabi,Hamid Etesami,Saeed Nikafshar 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.2
Extracted lignin from wastewater of Kraft process and lab-made salicylate alumoxane (Sal-A) nanoparticles were used as toughening agents in epoxy matrix. Epoxy/lignin composite, epoxy/Sal-A and epoxy/lignin/Sal-Al nanocomposites with various toughening agent loadings were cured with an aromatic diamine hardener. Lignin as an available cheap material and Sal-A, as multifunctional structures, both containing numerous phenolic hydroxyls on their surfaces, were incorporated into epoxy matrix with the aim of improving thermal and some mechanical properties of the resulting composites. Both particles interacted physically (directly) and chemically (indirectly) with the epoxy chains. Simplex lattice mixture design of experiment was applied for formulation development and optimization. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the extracted lignin, Sal-A nanoparticles and synthesized composites. Differential scanning calorimetry (DSC) was used to interpret thermal curing process. The presence of lignin and Sal-A nanoparticles in the epoxy matrix decreased the exothermic peak temperature and total heat of curing reaction. In the presence of 2.5 wt% lignin and 1.875 wt% Sal-A nanoparticles, tensile strength of epoxy composites was 22.23% and 30.92% higher than that of reference (pure) epoxy resin, respectively. Vickers hardness of epoxy composites in the presence of 2.5 wt% lignin and 2.5 wt% Sal-A nanoparticles was increased by 17.41% and 15.39%, accordingly.
Mansoor Mandegari,Laleh Ghasemi-Mobarakeh,Jaleh Varshosaz 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12
Acne vulgaris is the most common skin disorder that may cause constant scarring on the face. Conventionalmethods for acne treatment have various side effects such as inflammation, dryness, peeling, cutaneous irritation and scalingof the skin. The novel wound dressing coated with nanoparticles containing drug was fabricated as a drug delivery system foracne treatment. In this present, Polyvinyl alcohol (PVA) nanoparticles containing clindamycin were successfully prepared bythe electrospraying method and coated on the surface of cotton fabric. The final drug loaded nanoparticles were characterizedusing Field-emission scanning electron microscope (FE-SEM), Fourier transform infrared (FTIR), X-ray diffraction (XRD),Differential scanning calorimeter (DSC) and biodegradation. The increasing clindamycin concentration in electrosprayingsolution led to reverse effects on the viscosity, electrical conductivity and affect on the diameter of nanoparticles. At variousconcentrations of clindamycin, spherical nanoparticles with uniform size were formed from PVA solution. Also, drug releaserate was investigated using both in vitro dissolution and permeation methods during 720 min. Fractional release curvesobtained exhibited short term release of clindamycin within first 60 min and slower release rate until 720 min. The releaserate of clindamycin was higher from PVA nanoparticles containing 10 % W/W drug than those loaded with 5 % W/W drug. Release plots were analyzed based on Korsmeyer-Peppas model, suggesting Fickian diffusion as the dominant clindamycinrelease mechanism from the PVA nanoparticles. Moreover, the drug release profile of PVA nanoparticles coated cotton fabricwas found to be lower than that for the drug loaded nanoparticles. This study suggests wound dressing coated with PVAnanoparticles as a novel drug delivery vehicle for short term administration of clindamycin for treatment of acne scars.
Sadra Souzanchi,Laleh Nazari,Kasanneni Tirumala Venkateswara Rao,Zhongshun Yuan,Zhongchao Tan,Chunbao Charles Xu 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.101 No.-
This work aimed to produce 5-hydroxymethylfurfural (5-HMF) from glucose in a biphasic continuousflowtubular reactor with various heterogeneous solid acid catalysts or combined solid acid-base catalysts. Among the catalysts tested, niobium phosphate (NbP) was found to be the most active catalystfor glucose dehydration with a maximum 5-HMF yield of 45% at 150 C. The higher activity of NbPwas attributed to its higher total number of acid sites and BET surface area, as well as the presence of bothLewis acid and Brønsted acid sites. The effects of different operating conditions such as aqueous toorganic (A/O) phase ratio, reaction temperature and feeding flow rate on the activity of some selected catalystswere studied. Reducing A/O ratio by increasing the extracting organic phase flow rate and increasingthe reaction temperature (up to 150 C) were found to positively affect 5-HMF production fromglucose in the presence of NbP. Kinetics study demonstrated that the overall reaction of glucose dehydrationto 5-HMF over the NbP catalyst is a first-order reaction with the reaction rate constants (k) determinedas 0.06, 0.21 and 0.6 min 1 at 110, 130 and 150 C, respectively, and the apparent activationenergy (Ea) calculated to be 77 kJ/mol.
Hanieh Karimnezhad,Ehsan Salehi,Laleh Rajabi,Sara Azimi,Ali Ashraf Derakhshan,Meisam Ansari 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
Nanocomposite membranes were fabricated by dip-coating technique. Para-aminobenzoate alumoxane,boehmite–epoxide and chitosan were consecutively coated on the Kevlar fabric surface. The membraneswere utilized for removing n-hexane fromwater using a gravity-driven dead-end filtration setup. UV–vis,FTIR and SEM analyses were performed for characterization. Water affinity analyses revealed highlyhydrophilic nature of the modified membranes. Effect of pH was examined with the pH 2 providing thebest condition for oil–water separation. Maximum flux and rejection were obtained as 1128 Lm-2 h-1)and 94%, respectively. Deposited oil layer was effectively removed from the membrane surface using hotcitric acid solution.
Dehdari, Tahereh,Hassani, Laleh,Hajizadeh, Ebrahim,Shojaeizadeh, Davoud,Nedjat, Saharnaz,Abedini, Mehrandokht Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.17
Background: Few Iranian women take the Papanicolaou test despite its important role in preventing cervical cancer. This study aimed to determine the effectiveness of an educational intervention based on the protection motivation theory (PMT) variables and implementation intentions in the first and second Pap test practice among Iranian women. Materials and Methods: In this quasi-randomized controlled trial, 200 women who were referred to 30 primary health care clinics in Tehran were randomly selected. PMT variables and Pap test practice were measured at baseline and again after 3 and 15 months. The 4-week educational intervention program was conducted for the intervention group. Results: Following the intervention, the mean scores of self-efficacy, perceived vulnerability, and behavior intention variables were significantly higher in the intervention group when compared to the control group (p<0.05). No significant differences were found in the perceived severity, response efficacy, response cost, and fear between the two groups following the intervention. Higher percent of women in the intervention group had obtained first and second Pap test compared to the controls. Conclusions: The PMT and implementation intentions provide a suitable theory-based framework for developing educational interventions regarding Pap test practice in Iran.