scholarly journals Post-Treatment of Nanofiltration Polyamide Membrane through Alkali-Catalyzed Hydrolysis to Treat Dyes in Model Wastewater

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1645 ◽  
Author(s):  
Byung-Moon Jun ◽  
Yeomin Yoon ◽  
Chang Min Park
Keyword(s):  
Organic Pollutants ◽  
Water Flux ◽  
Treatment Method ◽  
Post Treatment ◽  
Amide Bonds ◽  
Molecular Weight Cutoff ◽  
Polyamide Membrane ◽  
Induced Changes ◽  
Hydrolysis Of ◽  
Zeta Potential Analysis

This research focused on the influence of post-treatment using alkali-catalyzed hydrolysis with a full-aromatic nanofiltration (NF) polyamide membrane and its application to the efficient removal of selected dyes. The post-treated membranes were characterized through Fourier transform infrared spectroscopy, goniometry, and zeta-potential analysis to analyze the treatment-induced changes in the intrinsic properties of the membrane. Furthermore, the changes in permeability induced by the post-treatment were evaluated via the measurement of water flux, NaCl rejection, and molecular weight cutoff (MWCO) under different pH conditions and post-treatment times. Major changes induced by the post-treatment in terms of physicochemical properties were the enhancement of permeability, hydrophilicity, and negative charge due to the hydrolysis of the membrane’s amide bonds. Four different dyes were selected as representative organic pollutants considering the MWCO of the post-treated membranes. Compared with the pristine NF membrane, membranes post-treated at pH 13.5 showed better water flux with similar rejection of the target dyes. On the basis of these results, the proposed post-treatment method for NF membranes can be applied to the removal of organic pollutants of various size.

Continuous Positive Airway Pressure (CPAP) Therapy for the Treatment of Hypernasality: A Single Case Study

2014 ◽  
Vol 24 (2) ◽  
pp. 48-58 ◽  
Author(s):  
Lakshmi Kollara ◽  
Graham Schenck ◽  
Jamie Perry
Keyword(s):  
Continuous Positive Airway Pressure ◽  
Airway Pressure ◽  
Positive Airway Pressure ◽  
Single Case ◽  
Treatment Method ◽  
Post Treatment ◽  
Subjective Perception ◽  
Cpap Therapy ◽  
Long Term Follow Up

Studies have investigated the applications of Continuous Positive Airway Pressure (CPAP) therapy in the treatment of hypernasality due to velopharyngeal dysfunction (VPD; Cahill et al., 2004; Kuehn, 1991; Kuehn, Moon, & Folkins, 1993; Kuehn et al., 2002). The purpose of this study was to examine the effectiveness of CPAP therapy to reduce hypernasality in a female subject, post-traumatic brain injury (TBI) and pharyngeal flap, who presented with signs of VPD including persistent hypernasality. Improvements in mean velopharyngeal orifice size, subjective perception of hypernasality, and overall intelligibility were observed from the baseline to 8-week post-treatment assessment intervals. Additional long-term assessments completed at 2, 3, and 4 months post-treatment indicated decreases in immediate post-treatment improvements. Results from the present study suggest that CPAP is a safe, non-invasive, and relatively conservative treatment method for reduction of hypernasality in selected patients with TBI. More stringent long-term follow up may indicate the need for repeated CPAP treatment to maintain results.

scholarly journals The effect of drying temperature on the properties of gelatin from carps (Cyprinus carpio) skin

2019 ◽  
Vol 37 (No. 4) ◽  
pp. 246-251 ◽  
Author(s):  
Joanna Tkaczewska ◽  
Maciej Wielgosz ◽  
Piotr Kulawik ◽  
Marzena Zajac
Keyword(s):  
Cyprinus Carpio ◽  
Freeze Drying ◽  
Treatment Method ◽  
Thermal Hydrolysis ◽  
Gel Properties ◽  
Drying Temperature ◽  
Freeze Dried ◽  
Different Temperatures ◽  
Pre Treatment ◽  
Hydrolysis Of

The influence of drying temperature on the characteristics and gel properties of gelatine from Cyprinus carpio L. skin was studied. Gelatine was extracted from the carp skin using NaOH and ethanol pre-treatment method, extracted in water in 45°C and then dried in 4 different temperatures: 50, 70, 80°C and freeze-dried. The  electrophoresis and functional properties of gelatines were investigated. Freeze drying allowed to obtain a high gelling force, and all other methods did not give satisfactory results. The proteins in gelatines dried at higher temperatures separated by electrophoresis gave severely blurred bands. It may be explained by thermal hydrolysis of collagen fibrils. Freeze drying is the only effective method for drying this product, which can be used in industry.

Evaluation and development of a novel pre-treatment method for mulberry leaves to enhance their bioactivity via enzymatic degradation of GAL-DNJ to DNJ

2021 ◽  
Author(s):  
Soo Takasu ◽  
Isabella Supardi Parida ◽  
Yoshihiro Kojima ◽  
Toshiyuki Kimura ◽  
Kiyotaka Nakagawa
Keyword(s):  
Enzymatic Degradation ◽  
Treatment Method ◽  
Mulberry Leaves ◽  
Pre Treatment ◽  
Hydrolysis Of

We demonstrated the conversion of GAL-DNJ into DNJ improves mulberry leaves bioavailability and constructed a novel enzymatic-based method to induce the hydrolysis of GAL-DNJ to DNJ.

scholarly journals Post-treatment Method for the Synthesis of Monodisperse Binary FePt-Fe3O4 Nanoparticles

2017 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhilu Liu ◽  
Chun Wu ◽  
Liang Niu ◽  
Ganting Yang ◽  
Kai Wang ◽  
...  
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Treatment Method ◽  
Post Treatment

Application of photocatalysis as a post treatment method of a heterotrophic–autotrophic denitrification reactor effluent

Chemosphere ◽  
2008 ◽  
Vol 72 (11) ◽  
pp. 1706-1711 ◽  
Author(s):  
Luigi Rizzo ◽  
Claudio Della Rocca ◽  
Vincenzo Belgiorno ◽  
Miray Bekbolet
Keyword(s):  
Treatment Method ◽  
Post Treatment ◽  
Autotrophic Denitrification ◽  
Denitrification Reactor

scholarly journals Pengalaman Adaptasi Survivor Schizophrenia Pasca Perawatan di Rumah Sakit

2020 ◽  
Vol 8 (2) ◽  
pp. 203
Author(s):  
Susanti Niman ◽  
Febri Christian
Keyword(s):  
Problem Solving ◽  
Health Workers ◽  
Treatment Method ◽  
Post Treatment ◽  
Severe Mental Disorder ◽  
Minimum Period ◽  
Problem Solving Skills ◽  
Rehabilitation Process ◽  
Environmental Support ◽  
Descriptive Approach

Schizophrenia adalah gangguan jiwa berat ditandai dengan perubahan pada persepsi, pikiran, afek, dan perilaku seseorang. Gejala schizophrenia berlangsung selama jangka waktu minimum  satu  bulan dan kemunduran  fungsi  berlangsung minimum selama enam bulan dengan tingkat kekambuhan 70 - 82%. Penderita schizophrenia sering ditemukan kurang mendapat dukungan sosial dalam mengoptimalkan proses rehabilitasi setelah menjalani perawatan di Rumah Sakit. Tujuan studi untuk mengekplorasi pengalaman survivor schizophrenia beradaptasi pasca rawat. Metode penelitian kualitatif dengan pendekatan deskriptif fenomenologi terhadap 10  informan. Hasil  ditemukan 5 tema adaptasi pasca perawatan di rumah sakit yaitu cara menghadapi suatu permasalahan, memiliki pekerjaan setelah keluar dari rumah sakit jiwa, dukungan keluarga, dukungan lingkungan dan dukungan tenaga kesehatan. Kesimpulan adaptasi survivor schizophrenia pasca perawatan di rumah sakit  membutuhkan kemampuan problem solving, dukungan dari keluarga dan masyarakat. Kata kunci: adaptasi, pengalaman, schizophrenia, survivor THE EXPERIENCE OF SCHIZOPHRENIA SURVIVOR ADAPTATION POST-CARE IN HOSPITAL    ABSTRACTSchizophrenia is a severe mental disorder characterized by changes in a person's perceptions, thoughts, affect, and behaviour. Schizophrenia symptoms last for a minimum period of one month and deterioration of function lasts for a minimum of six months with a recurrence rate of 70 - 82%. Schizophrenia sufferers are often found to lack social support in optimizing the rehabilitation process after undergoing treatment at the hospital. Purpose to explore the experience of survivor schizophrenia adapting post-treatment. Method Qualitative with a phenomenological descriptive approach to 10 informants. Results found 5 adaptation post-treatment themes in the hospital namely how to deal with a problem, having a job after leaving the mental hospital, family support, environmental support and support of health workers. Conclusion: Adaptation of post-treatment schizophrenia survivors in hospital requires problem- solving skills, support from family and community.  Keywords: adaptation, experience, schizophrenia, survivor

Highly efficient solution-processed CZTSSe solar cells based on a convenient sodium-incorporated post-treatment method

2020 ◽  
Vol 40 ◽  
pp. 196-203 ◽  
Author(s):  
Biwen Duan ◽  
Linbao Guo ◽  
Qing Yu ◽  
Jiangjian Shi ◽  
Huijue Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Efficient Solution ◽  
Treatment Method ◽  
Post Treatment ◽  
Solution Processed ◽  
Highly Efficient

OCT-Angiography as a reliable prognostic tool in laser-treated proliferative diabetic retinopathy: The RENOCTA Study

2020 ◽  
pp. 112067212096345
Author(s):  
Marco Lupidi ◽  
Ramkailash Gujar ◽  
Alessio Cerquaglia ◽  
Jay Chhablani ◽  
Daniela Fruttini ◽  
...  
Keyword(s):  
Diabetic Retinopathy ◽  
Proliferative Diabetic Retinopathy ◽  
Additional Treatment ◽  
Post Treatment ◽  
Vascular Perfusion ◽  
Significant Difference ◽  
Before And After ◽  
The Mean ◽  
Pre Treatment ◽  
Induced Changes

Purpose: To quantitatively assess retinal neovascularizations (RNVs) in proliferative diabetic retinopathy (PDR) before and after photocoagulative laser treatment (PLT) using Optical Coherence Tomography Angiography (OCT-A). Methods: Consecutive patients with PDR were examined with fluorescein angiography (FA) and OCT-A before and after PLT. Baseline and after-treatment FA images were quantitatively analyzed to assess both the RNVs area and leakage area. On OCT-A RNVs area, vascular perfusion density (VPD), vessel length density (VLD) and fractal dimension were computed. VPD of the full-retina OCT-A underneath the RNV was determined to evaluate potential laser-induced changes in vascular perfusion. Results: Fifteen eyes of 13 patients with PDR were enrolled. The mean area of the RNVs was 0.47 ± 0.50 mm2 in the baseline OCT-A and 0.32 ± 0.40 mm2 in the post-treatment assessment ( p = 0.0002). The mean RNV VPD of RNV was 2% ± 4% in pre-treatment and 1% ± 1% for the post-treatment ( p = 0.0001). The mean VLD of RNV was 7.26 ± 1.53 at baseline and 6.64 ± 1.65 in the post treatment ( p = 0.0002). A significant difference in terms of mean RNVs area and VPD reduction between eyes that needed additional treatment and those that did not (~40% vs ~20%; p < 0.05), was observed. Mean VPD of full-retinal thickness OCT-angiogram was 55% ± 10% for the pre-treatment and 53% ± 8% for the post treatment scan ( p = 0.02). Conclusion: The quantitative OCT-A assessment of laser-induced changes of RNVs can be a useful non-invasive approach for determining treatment efficacy. A reduction of RNVs area or VPD ⩾ 40% might reveal those eyes that won’t require additional treatment. Retinal perfusion impairment seemed to progress independently from the treatment.

XRD Study of the Influence of Heat Treatment on the Microstructure of Sol-Gel Processed ZrO2-Y2O3 Ceramics

1995 ◽  
Vol 398 ◽  
Author(s):  
C. Barrera-Solano ◽  
M. PiÑero ◽  
C. Jiménez-Solís ◽  
L. Gago-Duport
Keyword(s):  
Heat Treatment ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Profile Function ◽  
Xrd Study ◽  
Different Temperatures ◽  
Hydrolysis Of Metal Alkoxides ◽  
Induced Changes ◽  
Hydrolysis Of ◽  
Controlled Hydrolysis

ABSTRACTYSZ samples containing 5 and 10 mol% of Y203 were prepared by controlled hydrolysis of metal alkoxides. The dried powders were calcined at 800°C and then they were uniaxially pressed and sintered at different temperatures and next heated at 1400°C (∼ 5 MPa) or annealed at 1600°C for 24 h. The quantitative analysis of the experimental X-ray diffraction (XRD) spectra was performed by Whole Pattern Fitting (WPF). A Pseudo-Voigt (Thompson-Cox-Hastings) was used as shape profile function. The respective phase fractions (wt %) were fitted for both solid state solutions using the scale factor. The heat treatment induced changes are discussed.

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