Effect of light intensity and photoperiod on growth rate and biomass of Chlorella vulgaris

This study provides information on the effect of three light intensities (37.5, 62.5 and 100L/mol photons.m^- 2 s^-1) and photoperiods (light:dark) cycle 8:16, 12:12 and 16:8h on growth rate, duplication time and biomass production in microalga Chiarella vulgaris. Stock of C. vulgaris was separated from water samples taken at Anzali Wetland, purified and cultured in l000ml Erlenmeyer at constant temperature 25±0.5°C, using Zehnder medium. Cell count was conducted daily and biomass was measured at the exponential growth phase in different treatments. Analysis of variance indicated significant difference (P<0.05) among light regimes. The maximum growth rate 1.13d^-1 was observed at 100L/mol photons.m^- 2 s^-1 and 16:8h light duration and also the minimum duplication time 0.61d^- 1 occurred at this treatment. The maximum biomass 2.05gr^-1 was recorded at 62.5L/mol photons.m^ -2 s^-1 and 8:16h light period

A review on data stream classification

At this present time, the significance of data streams cannot be denied as many researchers have placed their focus on the research areas of databases, statistics, and computer science. In fact, data streams refer to some data points sequences that are found in order with the potential to be non-binding, which is generated from the process of generating information in a manner that is not stationary. As such the typical tasks of searching data have been linked to streams of data that are inclusive of clustering, classification, and repeated mining of pattern. This paper presents several data stream clustering approaches, which are based on density, besides attempting to comprehend the function of the related algorithms; both semi-supervised and active learning, along with reviews of a number of recent studies

Isolation of keratinophilic fungi and aerobic actinomycetes from park soils in Gorgan, North of Iran

Background: Keratinophilic fungi are a group of fungi that colonize in various keratinous substrates and degrade them to the components with low molecular weight. This study was conducted to determine the prevalence of keratinophilic fungi and aerobic Actinomycetes in soil of city parks in Gorgan. Objectives: In this study, we surveyed the city park soils of Gorgan (a northern province of Iran) to determine the identities and diversity of soil aerobic Actinomycetes, keratinophilic and non-keratinophilic fungi. Materials and Methods: A total of 244 soil samples were collected from 22 diferent parks of Gorgan, North of Iran. The samples were collected from the superfcial layer with depth not exceeding than 0-10 cm in sterile polyethylene bags. We used hair bait technique for isolation keratinophilic fungi. The colonies identifed by macroscopic and microscopic characterization after slide culturing. Actinomycetes were isolated by antibiotic dilution methods and detected by using physiological tests such as Lysozyme, Casein, Xanthine, Hypoxanthine, Gelatin, Urea Broth, and modifed acid-fast stain. Results: Totally, 75 isolates of aerobic Actinomycetes were detected that Actinomadura madurae and Nocardia asteroides were the most prevalent strains, with 14.66 and 28% prevalence respectively. Microsporum gypseum was more frequent than other keratinophilic fungi (22.96%) and Aspergillus spp. was the most species of saprophyte fungi (15.92%). Conclusions: This study showed that the collected soil from studied areas was rich of keratinophilic fungi and Actinomycetes, therefore hygiene protocol should be taken to prevent the spread of pathogenic and saprophytes fungi in the environment of susceptible person. © 2013, Ahvaz Jundishapur University of Medical Sciences

Epidemiological Study of Poisoning in Patients Referring Educational and Clinical Center of Ayatollah Kashani Hospital, Shahrekord (West of Iran) throughout 2008-2014

Background: Appropriate and early diagnosis and treatment of poisoning could be vital. Awareness of general pattern of poisoning in any geographical regions could be helpful in this regard. According to the lack of information and not being specified the epidemiologic forms of poisoning in Chaharmahal and Bakhtiari province (west of Iran), this study was carried out to determine the epidemiologic status of poisoning.Methods: In this routine data base study, available data were used in medical records of 394 patients with poisoning diagnosis throughout 2008-2014 at Ayatollah Kashani Hospital (only recipient hospital of poisoning in Chaharmahal and Bakhtiari province), which affiliated with Shahrekord University of Medical Sciences. Association between the studies was variable and also reasons for poisoning was investigated by chi-square, analysis of variance, independent t-test, Pearson's correlation in stata software.Results: Of 395 patients with poisoning, 207 (52.5%) were female and the rest were male. For the years under study, the highest poisoning ratio (20.26%) was seen in 2010 and the lowest (3%) in 2014. Mean age of all, male and female patients was 27.6 , 29.8, and 25.6 years, respectively, with a significant difference between male and female patients (P&lt;0.05).The mean and standard deviation of duration of hospitalization in respiratory patients was 3.2±4.2, injection 3±3.8, oral 2.5±3, others 2±1.2, and bite was 2 days (P&gt;0.05).The highest poisoning ratio (62%) was obtained for oral poisonings and the lowest (0.5%) was due to beating. For marital status, the highest poisoning ratio was obtained in the single individuals and the lowest in the divorced (P&lt;0.05). Of 395 patients, 358 (90.6%) survived and the rest died. The highest mortality (17 deaths) was due to oral poisoning.Conclusion: Poisoning occurs often in young people and has a high load in this group. Trend of poisoning in this province is steadily diminishing. Epidemiological, regional data helps to use the sources appropriately to prevent and control poisoning. Further, analysis of the effective factors could contribute to decreasing poisoning incidence by planners and policymakers

Multibody expansion of the local integrals of motion: How many pairs of particle-hole do we really need to describe the quasiparticles in the many-body localized phase?

The emergent integrability in a many-body localized (MBL) system can be well characterized by the existence of the complete set of local integrals of motion (LIOMs). Such exactly conserved and exponentially localized operators are often understood as quasiparticle operators which can be expanded in terms of single-particle operators dressed with different numbers of particle-hole pairs. Here, we consider a one-dimensional XXZ spin-$\frac12$ Heisenberg chain in the presence of a random field and try to quantify the corrections needed to be considered in the picture of quasiparticles associated with LIOMs due to the presence of particle-hole excitations. To this end, we explicitly present the multibody expansion of LIOM creation operators of the system in the MBL regime. We analytically obtain the coefficients of this expansion and discuss the effect of higher-order corrections associated with different numbers of particle-hole excitations. Our analysis shows that depending on the localization length of the system, there exist a regime in which the contributions that come from higher-order terms can break down the effective one-particle description of the LIOMs and such quasiparticles become essentially many-body-like

Algorithm development and analysis for on-line optimising control of large scale industrial processes

The work presented in the thesis is concerned with on-line optimising control of large scale industrial processes. Theoretical analysis has been carried out to investigate optimality and convergence features of various optimising control algorithms in both centralised and hierarchical forms, providing a basis for algorithm design and assessment. Important issues, such as iterative strategies, coordination methods and feedback structures, concerning the improvement of algorithm efficiency are explored. An improved price updating formula is proposed and implemented in the single iterative loop Integrated Optimisation and Parameter Estimation (ISOPE) structure with global feedback to further improve the convergence features of the algorithm. A new coordination technique — Modifier Coordination (MC) method is proposed and implemented in both single and double iterative ISOPE structures. Approaches for coping with output dependent constraints are examined and the Penalty Relaxation (PR) technique is integrated into the ISOPE structure to extend the existing ISOPE algorithms so as to cover many output dependent cases. Comparative studies of some newly developed algorithms, techniques and methods based on substantial computer simulations are also provided. Issues concerning software implementation of optimising control algorithms are discussed providing a general guideline to such practices. Suggestions for future research as a continuation of the work presented in this thesis are also made

Effect of foot reflexology on fatigue in patients undergoing hemodialysis: A sham-controlled randomized trial

Background and purpose: Fatigue is a common symptom in patients undergoing hemodialysis. Reflexology is a nursing intervention that could reduce fatigue. This study aimed at determining the effects of foot reflexology on fatigue in patients undergoing hemodialysis. Materials and methods: A clinical trial with before and after design was conducted in hemodialysis patients attending Imam-Ali and Iran-mehr clinic in Bojnurd, 2013. Using randomized sampling 78 patients were allocated into three groups: intervention, placebo, and control group. The patients in intervention group received foot reflexology, and simple foot reflexology without pressing certain parts of the foot was done in placebo group. The patients in control group received only routine care. Piper Fatigue Scale was used to measure fatigue level before and after the intervention. Data was analyzed using descriptive statistics, one-way ANOVA and Paired t-test. Results: The results showed a significant difference between fatigue scores in intervention and control groups before and after the intervention (P<0.001). After the foot reflexology, the fatigue score in intervention group reduced to 3.8±1.27 (vs. 4.34±1.35 before the intervention), while the fatigue score in control group increased to 5.19±0.87 (vs. 4.91±1.04 before the intervention) (P<0.05). The placebo group showed no significant difference before and after the intervention (P=0.9). Conclusion: Reflexology can be used as a nursing intervention in reducing fatigue among patients undergoing hemodialysis. © 2016, Mazandaran University of Medical Sciences. All rights reserved

Temporal Quantum Control with Graphene

We introduce a novel strategy for controlling the temporal evolution of a quantum system at the nanoscale. Our method relies on the use of graphene plasmons, which can be electrically tuned in frequency by external gates. Quantum emitters (e.g., quantum dots) placed in the vicinity of a graphene nanostructure are subject to the strong interaction with the plasmons of this material, thus undergoing time variations in their mutual interaction and quantum evolution that are dictated by the externally applied gating voltages. This scheme opens a new path towards the realization of quantum-optics devices in the robust solid-state environment of graphene.Comment: 5 pages, 2 figure