scholarly journals Synthesis of SAPO-20 Using Isopropylamine as a Template from a SAPO-34 Precursor

2021 ◽  
Author(s):  
Hairong Zhang ◽  
Hongyan Liu ◽  
Ruijie Bai ◽  
Rong Sun ◽  
Xi Zhang ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Energy Saving ◽  
Molecular Sieve ◽  
Treatment Time ◽  
Post Treatment ◽  
Comprehensive Utilization ◽  
Hexagonal Shape ◽  
Consumption Reduction

SAPO-20 molecular sieve with the SOD framework was successfully synthesized using SAPO-34 as the precursor and isopropylamine (IPA) as the template by phase-transformation route. The influence of post-treatment time (in IPA, H2O, and SAPO-34 system) and NaOH concentration (in IPA, NaOH, H2O, and SAPO-34 system) on the products was investigated. The results showed that sheet debris SAPO-34 building the hollow-inside cubic morphologies which was padding with irregular SAPO-34. It was received for the as-synthesized spherical aggregation SAPO-20 with hexagonal shape when the ratio of n(OH-)/n (H2O) is 0.12 and the ratio of n(IPA)/n (H2O) is 0.07 in the synthesis gel. This method not only develops a new route for the synthesis of SAPO-20 molecular sieve, but also provides a way of using waste SAPO-34 catalyst, which can be used as a new exploration model for energy saving, consumption reduction and comprehensive utilization in SAPO-34 catalyst process.

scholarly journals Barriers and facilitators to recommended physical activity in lower-limb osteoarthritis: protocol for a qualitative study exploring patients and physiotherapist perspectives using the theoretical domains framework and behaviour change taxonomy

BMJ Open ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. e029199
Author(s):  
Matthew James Willett ◽  
Carolyn Greig ◽  
David Rogers ◽  
Sally Fenton ◽  
Joan Duda ◽  
...  
Keyword(s):  
Behaviour Change ◽  
Lower Limb ◽  
Treatment Time ◽  
Change Theory ◽  
Theoretical Domains Framework ◽  
Post Treatment ◽  
Barriers And Facilitators ◽  
Structured Interviews ◽  
Behaviour Change Theory ◽  
Physiotherapy Intervention

IntroductionOsteoarthritis (OA) is the leading cause of disability and pain in older adults. Although increasing physical activity (PA) can help reduce symptoms, patients with lower-limb OA are less active than the general public. Although physiotherapists commonly deliver PA programmes, they lack knowledge of key barriers and facilitators to adherence to prescribed PA that patients with lower-limb OA experience while attending physiotherapy appointments (treatment period) and after discharge (post-treatment period). This study aims to explore the perspectives of patients with lower-limb OA of barriers and facilitators to adherence to physiotherapy prescribed PA in the treatment and post-treatment time periods to inform the development of intervention underpinned by behaviour change theory.Methods and analysisA qualitative study, based on phenomenology, will purposively recruit patients with lower-limb OA who have had physiotherapy. In-depth semi-structured interviews will be undertaken following discharge from physiotherapy at a single time point. Participants’ perspectives of physiotherapy interventions, including barriers and facilitators to prescribed PA and techniques that they felt optimised adherence to physiotherapist PA prescription will be explored (phase I). The acceptability and feasibility of delivering a physiotherapy intervention incorporating the techniques identified in the semi-structured interviews will then be explored through focus groups conducted with physiotherapists (phase II). Data will be coded following thematic analysis, with barriers and facilitators mapped to the constructs on the theoretical domains framework, and behaviour change techniques identified following definitions from Michie’s V1 taxonomy.Ethics and disseminationFindings from this study will inform development of a physiotherapy intervention underpinned by behaviour change theory aiming to optimise adherence to PA prescription in patients with lower-limb OA during the treatment and post-treatment time periods. This study has ethical approval (IRAS 247904) and results will be disseminated through publications in peer-reviewed journals and presentations at conferences and to study participants.

scholarly journals Solvent-mediated phase transformation of C60 crystals with well-defined hexagonal shape

2019 ◽  
Vol 730 ◽  
pp. 105-111 ◽  
Author(s):  
Saori Yamamoto ◽  
Yuto Funamori ◽  
Yuko Kaneda ◽  
Makoto Tanimura ◽  
Masaru Tachibana
Keyword(s):  
Phase Transformation ◽  
Hexagonal Shape

Phase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor

2011 ◽  
Vol 23 (6) ◽  
pp. 1406-1413 ◽  
Author(s):  
Peng Tian ◽  
Xiong Su ◽  
Yingxia Wang ◽  
Qinghua Xia ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Molecular Sieve

Factors affecting differential outcomes in the definitive treatment of anal cancer between HIV+ and HIV- patients.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 3572-3572
Author(s):  
Matthew Susko ◽  
Stephanie Kim ◽  
Ann Lazar ◽  
Angela Laffan ◽  
Mary Uan-Sian Feng ◽  
...  
Keyword(s):  
Local Recurrence ◽  
Anal Cancer ◽  
Treatment Time ◽  
Post Treatment ◽  
Definitive Treatment ◽  
Rank Test ◽  
Single Institution ◽  
Hiv Patients ◽  
Log Rank Test

3572 Background: Anal cancer is an uncommon malignancy with numerous factors that influence treatment outcomes. Historically, HIV+ patients were restricted from entering clinical trials, limiting data on their outcomes to small retrospective reports. This study seeks to understand the factors related to anal cancer outcomes, specifically the differences between HIV+ and HIV- patients. Methods: Inclusion criteria was non-metastatic anal squamous cell carcinoma treated with a definitive course of chemotherapy and radiation between 2005 and 2018 at a single institution. Clinical data related to baseline characteristics, treatment parameters, and post-treatment follow-up were extracted for calculation of freedom from local recurrence (FFLR) and overall survival (OS). Univariate analysis (UVA) and multivariate analysis (MVA) were done using cox proportional hazard model, and FFLR and OS were calculated using the Kaplan-Meier method. Results: During the study period, 111 patient initiated definitive treatment for anal cancer. Median age was 56.7 years (IQR: 51.4-63.5), and 47% (N = 52) were HIV+. At median follow-up of 28 months, 12 and 24-month FFLR was 84.1% and 78.2% respectively, with 24-month OS of 87.3%. MVA demonstrated significant association between FFLR and T-stage HR 4.02 (95% CI: 2.14-7.55) p < 0.001, elapsed treatment time (median of 50 days) 1.08 (95% CI: 1.04-1.12) p < 0.001, and diagnosis to treatment start (median time of 15 weeks) 1.05 (95% CI: 1.01-1.08) p = 0.005. Additional analysis with log-rank test for FFLR demonstrated significant difference between patients taking < 50 days to complete treatment (p = 0.03), and < 15 weeks from diagnosis to treatment completion (p = 0.006). In HIV+ patients, post-treatment CD4 < 150 was significantly associated with worse OS on log-rank test (p = 0.016), with pretreatment CD4 values being non-significant. Conclusions: This study represents the largest single institution report of HIV positive patients treated for anal cancer. No difference in local recurrence or overall survival between HIV+ and HIV- patients was elucidated; however, HIV+ patients with lower post-treatment CD4 counts had worse OS. The most significant predictors of local recurrence were advanced T-stage, increased time from diagnosis to treatment initiation, and prolonged treatment time.

Hexagonal-orthorhombic phase transformation of AlPO4-5 aluminophosphate molecular sieve

1993 ◽  
Vol 2 (1) ◽  
pp. 73-74 ◽  
Author(s):  
Naoyuki Ohnishi ◽  
Shilun Qiu ◽  
Osamu Terasaki ◽  
Tsuyoshi Kajitani ◽  
Kenji Hiraga
Keyword(s):  
Phase Transformation ◽  
Molecular Sieve ◽  
Orthorhombic Phase
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