2,508 research outputs found
Hard days and nights: hardships at work, a lack of support at home, and little or no social security combine to create a bleak future for women fishsellers in Mangalore, India
Mangalore is a port city situated in the west coast state of Karnataka in India. The city hosts both large-scale and small-scale fisheries along its coastline. Traditionally, fishermen catch the product and sell it at a daily auction in the harbour to women vendors, who thereafter transport the goods to the market for commercial sale. The trade starts early in the morning, when the fishermen return to the harbour from their nightly fishing
Skillnader i odling av kall- respektive varmvattenfisk i RAS
Anledningen till att studien gjordes Àr det ökande behovet av protein för humankonsumtion, i kombination med ett ökat antal tomma djurstallar. Studien tar upp RAS som Àr ett recirkulerande odlingssystem för fisk och passar bra inomhus. Eftersom vattnet renas och ÄteranvÀnds Àr det ett system som inte krÀver mer vattenresurser Àn nödvÀndigt. RAS Àr ett system som Àr anpassningsbart efter den fisk som produceras, dÄ vattenmiljön kan styras. Vid fiskodling Àr det viktigt att ha koll pÄ vilken miljö som passar fisken. De flesta fiskar klarar relativt stor temperaturvariation, men har ett smalare temperaturspektrum för optimal tillvÀxt. Syre Àr en mycket viktig faktor och mÄste finnas och oftast tillföras sÄ att det finns tillgÀngligt syre i tillrÀcklig mÀngd för att fisken ska mÄ bra. Studien jÀmför skillnader och likheter med att odla varm- respektive kallvattenfisk. Arterna som tas upp som exempel Àr niltilapia (Oreochromis niloticus) och röding (Salvelinus alpinus). BÄda arterna Àr efterfrÄgade hos svenska konsumenter, men röding Àr nÄgot vanligare dÄ den avlats i Sverige under lÀngre tid. Röding har en högre slaktvikt Àn tilapia, men nÄr den under lÀngre uppfödningstid. Foderomvandlingsfaktorn Àr nÄgot bÀttre hos röding Àn tilapia. Tilapia Àr en omnivor fisk och har god tillvÀxt pÄ ett helt vegetabiliskt foder. Röding Àr en karnivor fisk och stÀller högre krav pÄ fodrets proteininnehÄll. Fiskarterna har generellt ganska lika preferenser nÀr det kommer till vattenkvalité, förutom temperatur och syrehalt, dÀr det Àr en markant skillnad. Niltilapa krÀver varmt vatten, runt 30 C, för optimal tillvÀxt medan röding föredrar kallt vatten, runt 10 C. Avelsarbete finns hos bÄda arterna och har snabbt gjort stora skillnader inom produktionen. BÄde tilapia och röding har blivit billigare att producera och vÀxer snabbare nu jÀmfört med tidigare generationer av arterna.The reason why the study was conducted is the increasing need for protein for human consumption, combined with an increased number of empty animal stables. The study addresses RAS, which is a recirculating farming system for fish farming and fits well indoors. Since the water is purified and reused, it is a system that does not require more water resources than necessary. RAS is a system that is adaptable to the fish to be produced, when the aquatic environment can be strictly controlled. When farming fish, it is important to keep track of which environment suits the fish. Most fish can withstand relatively large temperature variation but have a narrower temperature spectrum for optimal growth. Oxygen is a very important factor and must be present and usually supplied so that there is enough sufficient oxygen available for the fish to feel good. The study compares differences and similarities with growing hot and cold-water fish respectively. The species covered as examples are niltilapia (Oreochromis niloticus) and Atlantic charr (Salvelinus alpinus). Both species are in demand from Swedish consumers, but Atlantic charr is more common since it has been bred in Sweden for a longer time. Atlantic char has a higher slaughter weight than tilapia but reaches it after a longer breeding time. The feed conversion factor is slightly better in char than tilapia. Tilapia is an omnivorous fish and has good growth on a whole vegetable feed. Atlantic charr is a carnivorous fish and places higher demands on the protein content of the feed. Fish species generally have quite similar preferences when it comes to water quality, except temperature and oxygen content, where there is a marked difference. Niltilapa requires warm water, around 30 °C, for optimal growth while charr prefers cold water, around 10 °C. Breeding work is found in both species and has in a quite short time made large differences on the production. Both tilapia and charr have become cheaper to produce and are growing faster now compared to previous generations of species
Master Teacher Interview with Sonya Herl
Transcript of an interview with Sonya Herl for Qualitative Educational Research.https://scholars.fhsu.edu/ors/1249/thumbnail.jp
Pancreatic exocrine insufficiency after bariatric surgery
Morbid obesity is a lifelong disease, and all patients require complementary follow-up including nutritional surveillance by a multidisciplinary team after bariatric procedures. Pancreatic exocrine insufficiency (PEI) refers to an insufficient secretion of pancreatic enzymes and/or sodium bicarbonate. PEI is a known multifactorial complication after upper gastrointestinal surgery, and might constitute an important clinical problem due to the large number of bariatric surgical procedures in the world. Symptoms of PEI often overlap with sequelae of gastric bypass, making the diagnosis difficult. Steatorrhea, weight loss, maldigestion and malabsorption are pathognomonic for both clinical conditions. Altered anatomy after bypass surgery can make the diagnostic process even more difficult. Fecal elastase-1 (FE1) is a useful diagnostic test. PEI should be considered in all patients after bariatric surgery with prolonged gastrointestinal complaints that are suggestive of maldigestion and/or malabsorption. Appropriate pancreatic enzyme replacement therapy should be part of the treatment algorithm in patients with confirmed PEI or symptoms suggestive of this complication
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Rening av avfallsvatten frÄn ett slakteri med fokus pÄ bakteriella patogener
This study was conducted at the City Abattoir in Kampala, Uganda to evaluate the cleaning process, with focus on bacterial pathogens, in a pilot scale integrated bioprocess. This consisted of four steps: anaerobic sequencing batch reactors; aerobic/anoxic sequencing batch
reactors; a high performance temperature controlled methanogenesis digester and a constructed wetland. The objective was to determine if this type of cleaning process could be used to clean wastewater from abattoirs in a satisfactory way.
The indicator organisms for faecal contamination, Escherichia coli and Enterococcus spp. were used to investigate in what numbers bacteria could be found in the untreated wastewater and how much that was reduced in the different steps of the cleaning process. The water was
analysed for Salmonella to see if human pathogens could be found and could survive the different steps of the treatment process. Antibiotic resistance analyses were also performed on the E. coli samples to see if any resistance could be found and if there was any variation of this parameter in the different treatment steps.
Five samples from the untreated water and from the different treatment steps were collected at five different occasions. The results from the study was that it seems that this type of cleaning plant can be used to decrease the numbers of bacteria in wastewater from abattoirs to a great extent though further decrease in bacterial numbers are needed before the water could be used for irrigation of edible crops or drinking. The most important cleaning step seems to be the anaerobic sequencing batch reactors.
No Salmonella was found in any samples but the human pathogen Shigella was found in several samples including from the final steps of cleaning. High levels of antibiotic resistance were only found in the isolates from the constructed wetland. It is hard to draw any conclusions from this result since the constructed wetland hadnât been functioning as it was supposed to be when this study was conducted.Denna studie genomfördes pĂ„ ett slakteri i centrala Kampala, Uganda för att utvĂ€rdera reningsprocessen, med avseende pĂ„ bakteriella patogener, av en integrerad bioprocess i pilotskala. Denna hade fyra reningssteg: anaeroba sekvensreaktorer; aeroba/anoxiska
sekvensreaktorer; en högpresterande och hög temperaturbiogasanlÀggning och en konstruerad
vÄtmark. MÄlsÀttningen med denna studie var att se ifall denna typ av rening pÄ ett tillfredstÀllande sÀtt kan rena avfallsvatten frÄn slakterier.
Indikatororganismerna för fekal kontamination, Escherichia coli och Enterococcus spp. anvÀndes för att utvÀrdera i vilka nivÄer bakterier fanns i det obehandlade vattnet och i vilken utstrÀckning nivÄerna minskade i de olika reningsstegen. Vattenproverna analyserades för Salmonella för att se ifall humana patogener kunde överleva de olika reningsprocesserna.
Antibiotikaresistensanalyser gjordes Àven pÄ E. coli-stammarna för att se ifall det fanns nÄgon antibiotikaresistens och ifall det fanns nÄgon variation av denna parameter i de olika stegen av rening.
Fem prover av det obehandlade vattnet och frÄn de olika reningsstegen samlades vid fem separata tillfÀllen. Resultaten frÄn studien visade att ovanstÄende typ av rening verkar kunna minska mÀngden bakterier till en stor utstrÀckning, dock har inte mÀngden sjunkit tillrÀckligt
för att man ska kunna anvÀnda vattnet för bevattning av Àtbara grödor eller som dricksvatten.
Det viktigaste reningssteget verkar vara de anaeroba sekvensreaktorerna. Ingen Salmonella kunde pÄvisas men den humana patogenen Shigella kunde konstateras i flera prover, dÀribland frÄn de sista reningsstegen. Endast i bakteriestammarna frÄn den konstruerade vÄtmarken pÄvisades höga nivÄer av antibiotikaresistens. DÄ vÄtmarken inte
fungerat som den Àr konstruerad för under denna studie Àr det svÄrt att uttala sig om relevansen av detta resultat rörande antibiotikaresistens
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