Abstract:
:Enzyme immobilization is one of the most important techniques for industrial applications. It makes the immobilized enzyme more stable and advantageous than the free form in different aspects. α-Amylase was immobilized on 4% cyanuric chloride-activated amidoximated acrylic fabric at pH 7.0 with (79%) maximum efficiency. A field emission scanning electron microscope and Fourier transform infrared were used to confirm the immobilization process. Even after being recycled 10 times, the immobilized enzyme lost just 28% of its initial activity. Owing to immobilization, the pH of the soluble α-amylase was shifted from 6.0 to 6.5. The immobilized α-amylases showed thermal stability at 60°C, and became more resistant to heavy metal ions. The km values of the immobilized and soluble α-amylases were 9.6 and 3.8 mg starch ml-1, respectively. In conclusion, this method shows that the immobilized α-amylase proved to be more efficient than its soluble form, and hence could be used during saccharification of starch.
journal_name
R Soc Open Scijournal_title
Royal Society open scienceauthors
Almulaiky YQ,Aqlan FM,Aldhahri M,Baeshen M,Khan TJ,Khan KA,Afifi M,Al-Farga A,Warsi MK,Alkhaled M,Alayafi AAMdoi
10.1098/rsos.172164subject
Has Abstractpub_date
2018-11-28 00:00:00pages
172164issue
11issn
2054-5703pii
rsos172164journal_volume
5pub_type
杂志文章abstract::In 1665, Huygens observed that two identical pendulum clocks, weakly coupled through a heavy beam, soon synchronized with the same period and amplitude but with the two pendula swinging in opposite directions. This behaviour is now called anti-phase synchronization. This paper presents an analysis of the behaviour of ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170777
更新日期:2017-09-06 00:00:00
abstract::The majority of carnivore species are described as solitary, but little is known about their social organization and interactions with conspecifics. We investigated the spatial organization and social interactions as well as relatedness of slender mongooses (Galerella sanguinea) living in the southern Kalahari. This i...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.182160
更新日期:2019-05-08 00:00:00
abstract::The basic reproduction number R 0 of the coronavirus disease 2019 h...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200786
更新日期:2020-09-23 00:00:00
abstract::With an attempt to economically and efficiently improve the water resistance of defatted soya bean flour (DSF)-based wood adhesives, DSF was subjected to thermal treatment at various temperatures (65°C, 80°C, 95°C, 110°C and 125°C) for 30 min. The effects of thermal treatment temperature onto the chemical structure, c...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180015
更新日期:2018-05-02 00:00:00
abstract::While various relationships between productivity and biodiversity are found in forests, the processes underlying these relationships remain unclear and theory struggles to coherently explain them. In this work, we analyse diversity-productivity relationships through an examination of forest structure (described by bas...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.160521
更新日期:2017-01-04 00:00:00
abstract::Vocal pitch is used as an important communicative device by humans, as found in the melodic dimension of both speech and song. Vocal pitch is determined by the degree of tension in the vocal folds of the larynx, which itself is influenced by complex and nonlinear interactions among the laryngeal muscles. The relations...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.172208
更新日期:2018-08-15 00:00:00
abstract::Prior experience influences visual perception. For example, extended viewing of a moving stimulus results in the misperception of a subsequent stimulus's motion direction-the direction after-effect (DAE). There has been an ongoing debate regarding the locus of the neural mechanisms underlying the DAE. We know the mech...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190114
更新日期:2019-03-27 00:00:00
abstract::Objects that are briefly flashed around the time of saccades are mislocalized. Previously, robust interactions between saccadic perceptual distortions and stimulus contrast have been reported. It is also known that crowding depends on the contrast of the target and flankers. Here, we investigated how stimulus contrast...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.160559
更新日期:2017-02-01 00:00:00
abstract::Determining the tempo and mode of non-avian dinosaur extinction is one of the most contentious issues in palaeobiology. Extensive disagreements remain over whether their extinction was catastrophic and geologically instantaneous or the culmination of long-term evolutionary trends. These conflicts have arisen due to nu...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.201195
更新日期:2020-11-18 00:00:00
abstract::Recent advances in biotechnology led to generation of large complex biological and clinical datasets that can be used to infer the underlying mechanism of many diseases and arrive at personalized treatments. One of these datasets are the whole genome profiles, including a good collection of publicly available human ge...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.191422
更新日期:2020-04-29 00:00:00
abstract::Polymer-based composites with the advantages of ceramics and polymers exhibit high dielectric constant, good processing properties and low dielectric loss. The composites with a varied content of irregular alumina (i-Al2O3) filler were prepared by UV-cured epoxy acrylic (EA). Spherical alumina (s-Al2O3) was used as a ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.181509
更新日期:2019-01-16 00:00:00
abstract::The potential disrupting effects of Azo dye on wastewater nutrients removal deserved more analysis. In this study, 15 days exposure experiments were conducted with alizarin yellow R (AYR) as a model dye to determine whether the dye caused adverse effects on biological removal of both the dye and nutrients in acclimate...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180795
更新日期:2018-08-15 00:00:00
abstract::At present, many modification methods have been proposed to improve the performance of recycled aggregate concrete (RAC). In this study, tests on the compressive strength and damping properties of modified RAC with the addition of different proportions of recycled coarse aggregate (RCA) (0, 50, 100%), rubber powder (1...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190813
更新日期:2019-12-04 00:00:00
abstract::Four kinds of functional ionic liquids (ILs) ([C3SO3Hnmp]HSO4), 1-(3-sulfopropyl)-1-methylpyrrolidone phosphate ([C3SO3Hnmp]H2PO4), 1-(3-sulfopropyl)-1-methylpyrrolidone p-toluene sulfonate ([C3SO3Hnmp]CH3SO3H) and 1-(3-sulfopropyl)-1-methylpyrrolidone methyl sulfonate ([C3SO3Hnmp]C6H6SO3H)) were prepared and the cata...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190166
更新日期:2019-08-14 00:00:00
abstract::When addressing their young infants, parents systematically modify their speech. Such infant-directed speech (IDS) contains exaggerated vowel formants, which have been proposed to foster language development via articulation of more distinct speech sounds. Here, this assumption is rigorously tested using both acoustic...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170306
更新日期:2017-08-02 00:00:00
abstract::Using a stochastic model, we investigate the probability of fixation, and the average time taken to achieve fixation, of a mutant in a population of wild-types. We do this in a context where the environment in which the competition takes place is subject to stochastic change. Our model takes into account interactions ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.172176
更新日期:2018-03-21 00:00:00
abstract::Digested sludge, as the main by-product of the sewage sludge anaerobic digestion process, still contains considerable organic compounds. In this protocol, we report a facile method for preparing digested sludge-derived self-doped porous carbon material for high-performance supercapacitor electrodes via a sustainable p...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.172456
更新日期:2018-04-11 00:00:00
abstract::Social insects live in dense groups with a high probability of disease transmission and have therefore faced strong pressures to develop defences against pathogens. For this reason, social insects have been hypothesized to invest in antimicrobial secretions as a mechanism of external immunity to prevent the spread of ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.171332
更新日期:2018-02-07 00:00:00
abstract::Low levels of heterozygosity can have detrimental effects on life history and growth characteristics of organisms but more subtle effects such as those on trade-offs of expensive tissues and morphological laterality, especially of the brain, have not been explicitly tested. The objective of the current study was to in...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170989
更新日期:2017-12-06 00:00:00
abstract::The utility of characterizing the effects of strain variation and individual/subgroup susceptibility on dose-response outcomes has motivated the search for new approaches beyond the popular use of the exponential dose-response model for listeriosis. While descriptive models can account for such variation, they have li...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180343
更新日期:2018-08-01 00:00:00
abstract::Humans commonly engage in a variety of search behaviours, for example when looking for an object, a partner, information or a solution to a complex problem. The success or failure of a search strategy crucially depends on the structure of the environment and the constraints it imposes on the individuals. Here, we focu...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190529
更新日期:2019-10-30 00:00:00
abstract::The present study introduces thermogravimetry with gas chromatography-mass spectrometry (TG-GC-MS) at four different heating rates to investigate the activation energy and thermal degradation behaviour of walnut shell pyrolysis. The distributed activation energy model (DAEM) was applied to investigate the activation e...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180331
更新日期:2018-09-12 00:00:00
abstract::Lignocellulosic bioethanol production results in huge amounts of stillage, a potentially polluting by-product. Stillage, rich in heavy metals and, mainly, inhibitors, requires specific toxicity studies to be adequately managed. To this purpose, we applied an FTIR ecotoxicological bioassay to evaluate the toxicity of l...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180718
更新日期:2019-01-16 00:00:00
abstract::Plague remains a threat to public health and is considered as a re-emerging infectious disease today. Rodents play an important role as major hosts in plague persistence and driving plague outbreaks in natural foci; however, few studies have tested the association between host diversity in ecosystems and human plague ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190216
更新日期:2019-06-19 00:00:00
abstract::Bears produce the most altricial neonates of any placental mammal. We hypothesized that the transition from colostrum to mature milk in bears reflects a temporal and biochemical adaptation for altricial development and immune protection. Comparison of bear milks with milks of other eutherians yielded distinctive prote...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.150395
更新日期:2015-10-21 00:00:00
abstract::Many important data types, such as the spike trains recorded from neurons in typical electrophysiological experiments, have a natural notion of distance or similarity between data points, even though there is no obvious coordinate system. Here, a simple Kozachenko-Leonenko estimator is derived for calculating the mutu...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.140391
更新日期:2015-05-13 00:00:00
abstract::Nanofertilization is postulated as a new technology to deal with the environmental problems caused by the intensive use of traditional fertilizers. One of the aims of this new technology is to improve foliar fertilization, which has many environmental advantages, but currently there are numerous factors that limit its...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200905
更新日期:2020-11-04 00:00:00
abstract::Magnetic nanospheres are versatile candidates for both fundamental and practical applications. Before they are applied in more complicated fields, their surface must be modified by several functionalities. However, the surface modification can be affected by the magnetic nanoparticles (MNP) embedded in the polymer mat...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190141
更新日期:2019-07-10 00:00:00
abstract::Aerial habitats present a challenge to find food across a large potential search volume, particularly for insectivorous bats that rely on echolocation calls with limited detection range and may forage at heights over 1000 m. To understand how bats use vertical space, we tracked one to five foraging flights of eight co...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.181942
更新日期:2019-02-27 00:00:00
abstract::Peroxyl radicals (RO O . ) are key intermediates in atmospheric chemistry, with relatively long lifetimes compared to most ot...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200521
更新日期:2020-09-09 00:00:00