SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "hsv:(TEKNIK OCH TEKNOLOGIER) ;lar1:(hb)"

Sökning: hsv:(TEKNIK OCH TEKNOLOGIER) > Högskolan i Borås

  • Resultat 1-10 av 1706
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  • Abedinifar, S., et al. (författare)
  • Ethanol production by Mucor indicus and Rhizopus oryzae from rice straw by separate hydrolysis and fermentation
  • 2009
  • Ingår i: Biomass and Bioenergy. - : Elsevier BV. - 0961-9534 .- 1873-2909. ; 33:5, s. 828-833
  • Tidskriftsartikel (refereegranskat)abstract
    • Rice straw was successfully converted to ethanol by separate enzymatic hydrolysis and fermentation by Mucor indicus, Rhizopus oryzae, and Saccharomyces cerevisiae. The hydrolysis temperature and pH of commercial cellulase and β-glucosidase enzymes were first investigated and their best performance obtained at 45 °C and pH 5.0. The pretreatment of the straw with dilute-acid hydrolysis resulted in 0.72 g g-1 sugar yield during 48 h enzymatic hydrolysis, which was higher than steam-pretreated (0.60 g g-1) and untreated straw (0.46 g g-1). Furthermore, increasing the concentration of the dilute-acid pretreated straw from 20 to 50 and 100 g L-1 resulted in 13% and 16% lower sugar yield, respectively. Anaerobic cultivation of the hydrolyzates with M. indicus resulted in 0.36-0.43 g g-1 ethanol, 0.11-0.17 g g-1 biomass, and 0.04-0.06 g g-1 glycerol, which is comparable with the corresponding yields by S. cerevisiae (0.37-0.45 g g-1 ethanol, 0.04-0.10 g g-1 biomass and 0.05-0.07 glycerol). These two fungi produced no other major metabolite from the straw and completed the cultivation in less than 25 h. However, R. oryzae produced lactic acid as the major by-product with yield of 0.05-0.09 g g-1. This fungus had ethanol, biomass and glycerol yields of 0.33-0.41, 0.06-0.12, and 0.03-0.04 g g-1, respectively. 
  •  
4.
  •  
5.
  • Abtahi, Farhad, 1981-, et al. (författare)
  • An Affordable ECG and Respiration Monitoring System Based on Raspberry PI and ADAS1000 : First Step towards Homecare Applications
  • 2015
  • Ingår i: 16th Nordic-Baltic Conference on Biomedical Engineering. - Cham : Springer. - 9783319129662 ; , s. 5-8, s. 5-8
  • Konferensbidrag (refereegranskat)abstract
    • Homecare is a potential solution for problems associated with an aging population. This may involve several physiological measurements, and hence a flexible but affordable measurement device is needed. In this work, we have designed an ADAS1000-based four-lead electrocardiogram (ECG) and respiration monitoring system. It has been implemented using Raspberry PI as a platform for homecare applications. ADuM chips based on iCoupler technology have been used to achieve electrical isolation as required by IEC 60601 and IEC 60950 for patient safety. The result proved the potential of Raspberry PI for the design of a compact, affordable, and medically safe measurement device. Further work involves developing a more flexible software for collecting measurements from different devices (measuring, e.g., blood pressure, weight, impedance spectroscopy, blood glucose) through Bluetooth or user input and integrating them into a cloud-based homecare system.
  •  
6.
  •  
7.
  • Abtahi, Farhad, et al. (författare)
  • Biosignal PI, an Affordable Open-Source ECG and Respiration Measurement System
  • 2014
  • Ingår i: Sensors. - : MDPI AG. - 1424-8220. ; 15:1, s. 93-109
  • Tidskriftsartikel (refereegranskat)abstract
    • Bioimedical pilot projects e.g., telemedicine, homecare, animal and human trials usually involve several physiological measurements. Technical development of these projects is time consuming and in particular costly. A versatile but affordable biosignal measurement platform can help to reduce time and risk while keeping the focus on the important goal and making an efficient use of resources. In this work, an affordable and open source platform for development of physiological signals is proposed. As a first step an 8–12 leads electrocardiogram (ECG) and respiration monitoring system is developed. Chips based on iCoupler technology have been used to achieve electrical isolation as required by IEC 60601 for patient safety. The result shows the potential of this platform as a base for prototyping compact, affordable, and medically safe measurement systems. Further work involves both hardware and software development to develop modules. These modules may require development of front-ends for other biosignals or just collect data wirelessly from different devices e.g., blood pressure, weight, bioimpedance spectrum, blood glucose, e.g., through Bluetooth. All design and development documents, files and source codes will be available for non-commercial use through project website, BiosignalPI.org.
  •  
8.
  • Abtahi, Farhad, 1981-, et al. (författare)
  • Development and preliminary evaluation of an Android based heart rate variability biofeedback system
  • 2014
  • Ingår i: Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE. - : IEEE. - 9781424479290 ; 2014, s. 3382-5
  • Konferensbidrag (refereegranskat)abstract
    • The reduced Heart Rate Variability (HRV) is believed to be associated with several diseases such as congestive heart failure, diabetes and chronic kidney diseases (CKD). In these cases, HRV biofeedback may be a potential intervention method to increase HRV which in turn is beneficial to these patients. In this work, a real-time Android biofeedback application based on a Bluetooth enabled ECG and thoracic electrical bioimpedance (respiration) measurement device has been developed. The system performance and usability have been evaluated in a brief study with eight healthy volunteers. The result demonstrates real-time performance of system and positive effects of biofeedback training session by increased HRV and reduced heart rate. Further development of the application and training protocol is ongoing to investigate duration of training session to find an optimum length and interval of biofeedback sessions to use in potential interventions.
  •  
9.
  • Abtahi, Farhad, et al. (författare)
  • Electrical bioimpedance spectroscopy in time-variant systems : Is undersampling always a problem?
  • 2014
  • Ingår i: Journal of Electrical Bioimpedance. - : Walter de Gruyter GmbH. - 1891-5469. ; 5:1, s. 28-33
  • Tidskriftsartikel (refereegranskat)abstract
    • During the last decades, Electrical Bioimpedance Spectroscopy (EBIS) has been applied mainly by using the frequency-sweep technique, across a range of many different applications. Traditionally, the tissue under study is considered to be time-invariant and dynamic changes of tissue activity are ignored by treating the changes as a noise source. A new trend in EBIS is simultaneous electrical stimulation with several frequencies, through the application of a multi-sine, rectangular or other waveform. This method can provide measurements fast enough to sample dynamic changes of different tissues, such as cardiac muscle. This high sampling rate comes at a price of reduction in SNR and the increase in complexity of devices. Although the frequency-sweep technique is often inadequate for monitoring the dynamic changes in a variant system, it can be used successfully in applications focused on the time-invariant or slowly-variant part of a system. However, in order to successfully use frequency-sweep EBIS for monitoring time-variant systems, it is paramount to consider the effects of aliasing and especially the folding of higher frequencies, on the desired frequency e.g. DC level. This paper discusses sub-Nyquist sampling of thoracic EBIS measurements and its application in the case of monitoring pulmonary oedema. It is concluded that by considering aliasing, and with proper implementation of smoothing filters, as well as by using random sampling, frequency-sweep EBIS can be used for assessing time-invariant or slowly-variant properties of time-variant biological systems, even in the presence of aliasing. In general, undersampling is not always a problem, but does always require proper consideration.
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 1706
Typ av publikation
tidskriftsartikel (858)
konferensbidrag (563)
doktorsavhandling (90)
bokkapitel (58)
rapport (37)
forskningsöversikt (31)
visa fler...
annan publikation (26)
licentiatavhandling (24)
konstnärligt arbete (15)
patent (7)
bok (5)
samlingsverk (redaktörskap) (3)
proceedings (redaktörskap) (3)
visa färre...
Typ av innehåll
refereegranskat (1194)
övrigt vetenskapligt/konstnärligt (478)
populärvet., debatt m.m. (33)
Författare/redaktör
Taherzadeh, Mohammad ... (293)
Skrifvars, Mikael (142)
Taherzadeh, Mohammad ... (108)
Taherzadeh Esfahani, ... (73)
Nierstrasz, Vincent, ... (68)
Skrifvars, Mikael, 1 ... (59)
visa fler...
Sárvári Horváth, Ilo ... (58)
Seoane, Fernando, 19 ... (51)
Mahboubi, Amir (50)
Karimi, Keikhosro (49)
Taherzadeh, Mohammad (43)
Cho, Sung-Woo (40)
Taherzadeh, M.J. (40)
Niklasson, Claes, 19 ... (36)
Zamani, Akram (36)
Persson, Nils-Kriste ... (36)
Ferreira, Jorge (36)
Bolton, Kim (33)
Åkesson, Dan, 1970- (32)
Evertsson, Magnus, 1 ... (32)
Ekwall, Daniel (30)
Bengtsson, Magnus, 1 ... (30)
Guo, Li (30)
Åkesson, Dan (26)
Karimi, K. (25)
Lundin, Magnus (24)
Adekunle, Kayode (22)
Lennartsson, Patrik ... (22)
Lindecrantz, Kaj (21)
Millati, Ria, 1972 (21)
Nierstrasz, Vincent (21)
Hulthén, Erik, 1980 (21)
Mukesh Kumar, Awasth ... (21)
Seoane, Fernando (20)
Franzén, Carl Johan, ... (20)
Berglin, Lena (20)
Kadi, Nawar, Profess ... (19)
Rousta, Kamran (19)
Hedenqvist, Mikael S ... (18)
Bashir, Tariq (18)
Rajendran, Karthik (18)
Jeihanipour, Azam (18)
Zhang, Zengqiang (18)
Sandsjö, Leif (18)
Lund, Anja (18)
Guan, Jinping (17)
Wikandari, Rachma (17)
Sar, Taner, Postdoct ... (17)
Wainaina, Steven (17)
Gällstedt, Mikael (17)
visa färre...
Lärosäte
Chalmers tekniska högskola (238)
Kungliga Tekniska Högskolan (71)
Jönköping University (39)
RISE (33)
Luleå tekniska universitet (27)
visa fler...
Göteborgs universitet (17)
Linköpings universitet (13)
Lunds universitet (12)
Karolinska Institutet (11)
Högskolan i Skövde (10)
Sveriges Lantbruksuniversitet (8)
Umeå universitet (7)
Uppsala universitet (6)
Linnéuniversitetet (4)
Stockholms universitet (3)
Högskolan i Gävle (2)
Mälardalens universitet (2)
Mittuniversitetet (2)
Gymnastik- och idrottshögskolan (2)
Karlstads universitet (2)
Högskolan i Halmstad (1)
Högskolan Väst (1)
visa färre...
Språk
Engelska (1631)
Svenska (73)
Tyska (1)
Ungerska (1)
Forskningsämne (UKÄ/SCB)
Teknik (1705)
Naturvetenskap (244)
Samhällsvetenskap (104)
Medicin och hälsovetenskap (55)
Humaniora (40)
Lantbruksvetenskap (25)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy