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Minimizing the environmental impact of PFAS by using specialized coagulants for the treatment of PFAS polluted waters and for the decontamination of firefighting equipment

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Emerging Contaminants 2021年第1期7卷 63-76页

作者： Martin Cornelsen roland Weber Stefan Panglisch Cornelsen Umwelttechnologie GmbH Graf-Beust-Allee 3345141EssenGermany POPs Environmental Consulting Lindenfirststr.2373527Schwabisch GmündGermany University Duisburg Essen(UDE) Mechanical Process Engineering/Water TechnologyLotharstr.147057DuisburgGermany

Per-and polyfluoroalkyl substances(PFASs)represent an increasingly global challenge for keeping water and soil“non-toxic”.100 of millions of people are exposed to PFAS levels of concern,in particular,around PFAS production sites and sites where PFASs are/were used and released or *** Stockholm Convention established recommendations to systematically assess PFOS pollution which can be transposed to all PFASs considering that PFASs are an issue of concern under The Strategic Approach to International Chemical Management(SAICM).One major wide-spread source of environmental pollution is the long-term use of PFAS-containing fire extinguishing *** for the reduction of human exposure need to reduce and were feasible eliminate the current uses of PFASs and reduce and eliminate the human exposure from the contamination of the environment from past uses including contaminated drinking *** current study shows that well-known methods of water treatment,especially the use of materials for adsorption and ion exchange,can often neither guarantee satisfactory cleaning results nor economically justifiable filter running times at high PFAS concentrations and complex matrix *** combination with a pre-precipitation stage using specialized precipitants can significantly optimize treatment *** is still being released into the environment in considerable quantities by *** use of so-called aqueous film forming foams(AFFF).Fire departments are increasingly trying to reduce the risks associated with the use of AFFF agents for the health of firefighting personnel and the environment by replacing AFFF foaming agents with fluorine-free foaming *** the fluorine-containing foaming agents are simply replaced,considerable residual PFAS loads often remain in the fire extinguishing systems contaminated with PFAS(fire engines,fire boats,stationary fire extinguishing systems,etc.),which are then discharged further into the environment durin

关键词： Contaminated sites Adsorption Short-chain PFAS Ion exchange Activated carbon PerfluorAd Fire truck cleaning

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A　simulation　of　radiation　imagery　for　ocean　color　satellite

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Acta Oceanologica Sinica 1997年第2期16卷 171-191页

作者： Pan, Delu Doerffer, roland Mao, Tianming Li, Shujing Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China Physics Institute GKSS Research Center D-2504 Geestchat Germany

Ｔｈｅｏｃｅａｎｃｏｌｏｒｓａｔｅｌｌｉｔｅｉｓｍａｉｎｌｙａｐｐｌｉｅｄｔｏｍｅａｓｕｒｅｔｈｅｗａｔｅｒｃｏｎｓｔｉｔｕｅｎｔｓｓｕｃｈａｓｃｈｌｏｒｏｐｈｙｌｌ，ｓｕｓｐｅｎｄｅｄｍａｔｅｒｉａｌａｎｄｙｅｌｌ... 详细信息

Ｔｈｅｏｃｅａｎｃｏｌｏｒｓａｔｅｌｌｉｔｅｉｓｍａｉｎｌｙａｐｐｌｉｅｄｔｏｍｅａｓｕｒｅｔｈｅｗａｔｅｒｃｏｎｓｔｉｔｕｅｎｔｓｓｕｃｈａｓｃｈｌｏｒｏｐｈｙｌｌ，ｓｕｓｐｅｎｄｅｄｍａｔｅｒｉａｌａｎｄｙｅｌｌｏｗｓｕｂｓｔａｎｃｅ．Ｔｈｅｌｅａｖｉｎｇｗａｔｅｒｒａｄｉａｎｃｅｉｓｖｅｒｙｓｍａｌｌｐａｒｔｏｆｔｈｅｔｏｔａｌｒａｄｉａｎｃｅａｒｒｉｖａｌａｔｔｈｅｓｅｎｓｏｒ，ａｂｏｕｔ３％－１５％，ａｎｄｄｅｐｅｎｄｓｏｎｔｈｅｐｒｏｐｅｒｔｉｅｓｏｆｔｈｅｏｒｂｉｔａｎｄｓｅｎｓｏｒ，Ｂｅｆｏｒｅｔｈｅｓａｔｅｌｌｉｔｅｉｓｌａｕｎｃｈｅｄｏｎｔｈｅｏｒｂｉｔ，ｉｔｎｅｅｄｓｔｏｓｉｍｕｌａｔｅｔｈｅｒａｄｉａｔｉｏｎｉｍａｇｅｒｙｉｎｏｒｄｅｒｔｏｅｖａｌｕａｔｅｔｈｅｑｕａｌｉｔｙａｎｄａｖａｉｌａｂｉｌｉｔｙｏｆｔｈｅｓａｔｅｌｌｉｔｅｄａｔａ．Ｉｆｔｈｅｐａｒａｍｅｔｅｒｓｏｆｓａｔｅｌｌｉｔｅｏｒｂｉｔ，ｔｈｅｐｒｏｐｅｒｔｉｅｓｏｆｓｅｎｓｏｒａｓｗｅｌｌａｓｔｈｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｔｈｅａｔｍｏｓｐｈｅｒｅａｎｄｗａｔｅｒｈａｖｅｂｅｅｎｋｎｏｗｎ，ｔｈｅｒａ

关键词： simulation imagery ocean radiation color

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The influence of different exercise intensities on kicking accuracy and velocity in soccer players

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Journal of Sport and Health Science 2017年第4期6卷 462-467页

作者： Ricardo Ferraz roland van den Tillar Mario C. Marques Department of Sports Sciences University of Beira Interior Convento de St Antonio Covilha 6200-001 Portugal Research Center in Sport Sciences Health Sciences and Human Development CIDESD Vila Real 5000-801 Portugal Department of Teacher Education Nord Trondelag University College Levanger 7600 Norway

Purpose: The aim of this study was to investigate the influence of different exercise intensities induced by a soccer specific protocol on kicking performance in soccer ***: Twelve semi-professional male soccer players participated in this study and performed maximal instep kicks before and after the implementation of an exercise protocol to determine the influence of different intensities upon kicking ball velocity and the target-hitting ***: Analysis of variance designs with repeated measures showed that maximal ball velocity was affected only after the most intense circuit(F(6, 66) = 2.3; p = 0.041; η2= 0.18), while accuracy was not affected in the protocol(F(6, 66) = 0.19; p = 0.98; η2= 0.02). Low and moderate intensities did not affect accuracy or kicking ball ***: These findings suggest that kicking ball velocity is influenced by high-exercise intensities. Low and moderate exercise intensities do not affect the performance of the kick, and intensity does not influence accuracy. Otherwise, it is possible that other mechanisms(not only physiological) may influence players during the exercise.

关键词： Exercise intensity Fatigue Kicking soccer Pacing

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FSpot:Fast and Efficient Video Encoding Workloads Over Amazon Spot Instances

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Computers, Materials & Continua 2022年第6期71卷 5677-5697页

作者： Anatoliy Zabrovskiy Prateek Agrawal Vladislav Kashansky roland Kersche Christian Timmerer Radu Prodan University of Klagenfurt Klagenfurt9020Austria Lovely Professional University Phagwara144411India Petrozavodsk State University Petrozavodsk185035Russia Bitmovin Klagenfurt9020Austria

HTTP Adaptive Streaming(HAS)of video content is becoming an undivided part of the Internet and accounts for most of today’s network *** compression technology plays a vital role in efficiently utilizing network channels,but encoding videos into multiple representations with selected encoding parameters is a significant ***,video encoding is a computationally intensive and time-consuming operation that requires high-performance resources provided by on-premise infrastructures or public *** turn,the public clouds,such as Amazon elastic compute cloud(EC2),provide hundreds of computing instances optimized for different purposes and clients’***,there is a need for algorithms and methods for optimized computing instance selection for specific tasks such as video encoding and transcoding ***,the encoding speed directly depends on the selected encoding parameters and the complexity characteristics of video *** this paper,we first benchmarked the video encoding performance of Amazon EC2 spot instances using multiple×264 codec encoding parameters and video sequences of varying ***,we proposed a novel fast approach to optimize Amazon EC2 spot instances and minimize video encoding ***,we evaluated how the optimized selection of EC2 spot instances can affect the encoding *** results show that our approach,on average,can reduce the encoding costs by at least 15.8%and up to 47.8%when compared to a random selection of EC2 spot instances.

关键词： EC2 spot instance encoding time prediction adaptive streaming video transcoding clustering HTTP adaptive streaming MPEG-DASH cloud computing optimization Pareto front

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Possible links between COVID-19 and male fertility

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Asian pacific Journal of Reproduction 2020年第5期9卷 211-214页

作者： roland Eghoghosoa Akhigbe Moses Agbomhere Hamed Department of Physiology Ladoke Akintola University of TechnologyOgbomosoOyo StateNigeria Reproductive Biology and Toxicology Research Laboratories Oasis of Grace HospitalOsogboOsun StateNigeria Buntai Medical and Diagnostic Laboratories OsogboNigeria

The coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)may have a ripple effect that puts men at a risk of *** article reviews the possible link between SARS-CoV-2 infection and male reproduction following speculations that the single-stranded RNA viruses could directly invade the ***-CoV-2 enters the human lung cells via angiotensin converting enzyme 2(ACE2).ACEs,its products,angiotensin-(1-7),and its receptor,MAS receptor,are expressed in the *** the binding of SAR-CoV-2 to ACE2 could lead to excess angiotensinⅡwith possible enhanced inflammation,angiotensinⅡcould also promote sperm *** addition,the pathophysiology of SAR-CoV-2,especially in relation to male fertility,is yet to be fully understood;the suppression of androgen observed in COVID-19 infected men calls for the need for andrological assessment in infected male.

关键词： SARS-CoV-2 COVID-19 Angiotensin converting enzyme Steroidogenesis Spermatogenesis

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Primary lymph node ratio and hepatic resection for colorectal metastases

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Hepatobiliary Surgery and Nutrition 2018年第2期7卷 149-150页

作者： Daniel Ansari William Torén roland Andersson Department of Surgery Clinical Sciences LundLund University and Skane University HospitalLundSweden

Colorectal cancer(CRC)is a leading cause of death worldwide(1).The liver is the most common site for distant metastases,and approximately 50%of patients diagnosed with CRC develop hepatic metastases during the course of their disease(2).Improvements in surgical techniques,anesthesia and multimodal treatment regimens(e.g.,neoadjuvant chemotherapy and portal vein embolization)have expanded the indications for liver resection(3).Hepatic resection is nowadays offered to patients previously deemed unresectable,such as those with multiple or bilobar metastases,extrahepatic disease and recurrent *** 5-year overall survival rate after resection for CRC liver metastases is close to 60%at specialty units,with low perioperative morbidity and mortality(4,5).

关键词： metastases resection hepatic

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Luminescent line art by direct-write patterning

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Light(Science & Applications) 2016年第1期5卷 518-521页

作者： Erik Mattias Lindh Andreas Sandström Mats roland Andersson Ludvig Edman The Organic Photonics and Electronics Group UmeaUniversityUmeaSweden LunaLEC AB UmeaSweden Future Industries Institute University of South AustraliaMawson LakesSA 5095Australia

We present a direct-write patterning method for the realization of electroluminescent(EL)line art using a surface-emissive light-emitting electrochemical cell with its electrolyte and EL material separated into a bilayer *** line-art emission is achieved through subtractive patterning of the electrolyte layer with a stylus,and the single-step patterning can be either manual for personalization and uniqueness or automated for high throughput and *** demonstrate that the light emission is effectuated by cation-assisted electron injection in the patterned regions and that the resulting emissive lines can be as narrow as a few *** versatility of the method is demonstrated through the attainment of a wide range of light-emission patterns and colors using a variety of different *** that this low-voltage-driven and easy-to-modify luminescent line-art technology could be of interest for emerging applications,such as active packaging and personalized gadgets.

关键词： direct-write patterning light-emitting electrochemical cell luminescent line art organic electronics

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Patient comfort and quality in colonoscopy

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World Journal of Gastroenterology 2013年第15期19卷 2355-2361页

作者： Vivian E Ekkelenkamp Kevin Dowler roland M Valori Paul Dunckley Department of Gastroenterology Gloucestershire Hospitals NHS TrustGloucester GL1 3NNUnited Kingdom Department of Gastroenterology and Hepatology Erasmus University Medical Center3000 CA RotterdamThe Netherlands

AIM: To explore the relationship of patient comfort and experience to commonly used performance indicators for colonoscopy. METHODS: All colonoscopies performed in our four endoscopy centres are recorded in two reporting systems that log key performance indicators. From 2008 to 2011, all procedures performed by qualified endoscopists were evaluated; procedures performed by trainees were excluded. The following variables were measured: Caecal intubation rate (CIR), nurse-reported comfort levels (NRCL) on a scale from 1 to 5, polyp detection rate (PDR), patient experience of the procedure (worse than expected, as expected, better than expected), and use of sedation and analgesia. Pearson' s correlation coefficient was used to identify relationships between performance ***: A total of 17027 colonoscopies were performed by 23 independent endoscopists between 2008 and 2011. Caecal intubation rate varied from 79.0% to 97.8%, with 18 out of 23 endoscopists achieving a CIR of > 90%. The percentage of patients experiencing significant discomfort during their procedure (defined as NRCL of 4 or 5) ranged from 3.9% to 19.2% with an average of 7.7%. CIR was negatively correlated with NRCL-45 (r=-0.61, P < 0.005), and with poor patient experience (r=-0.54, P < 0.01). The average dose of midazolam (mean 1.9 mg, with a range of 1.1 to 3.5 mg) given by the endoscopist was negatively correlated with CIR (r=-0.59, P < 0.01). CIR was positively correlated with PDR (r=0.44, P < 0.05), and with the numbers of procedures performed by the endoscopists (r=0.64, P < 0.01). CONCLUSION: The best colonoscopists have a higher CIR, use less sedation, cause less discomfort and find more polyps. Measuring patient comfort is valuable in monitoring performance.

关键词： Endoscopy Colonoscopy Quality Comfort Performance

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A spy named orphan

A spy named orphan

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作者： roland Philipps.

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Cultural Landscape in World Heritage Conservation and Cultural Landscape Conservation Challenges in Asia

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Built Heritage 2018年第3期2卷 3-26页

作者： Mechtild Rössler roland Chih-Hung Lin World Heritage Centre United Nations EducationalScientific and Cultural OrganisationParisFrance

UNESCO was the first United Nations agency to deal with landscapes at a global scale,notably through the World Heritage *** 1992,‘Cultural Landscapes’became a new category on the World Heritage List combining works of nature and of humankind:cultural landscapes often illustrate a specific relation between people and nature and can reflect techniques of sustainable land use,fostering strong links between culture and sustainable *** such as the UNESCO-Greece Melina Mercouri International Prize highlight outstanding examples of safeguarding activities at the world’s major cultural landscapes and offer opportunities to share good practices and create *** landscapes face numerous threats across the world,and especially in Asia,with its growing infrastructure development and *** article shares some of the knowledge and experience garnered by UNESCO through its conservation and management activities at cultural landscapes in Asia(Bamiyan Valley in Afghanistan,Bhutan,Silk Roads heritage corridors)and highlights the urgent need for a cultural-historical-natural territory approach to address the pressing challenges for the conservation of Cultural Landscapes in ***,the article advocates for a strong focus on the peoples and communities that inhabit these territories and their involvement at all stages.

关键词： cultural landscape World Heritage conservation management Asia Bhutan Bamiyan Silk Roads

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