IMMEDIATE AND 2ND-YEAR EFFECTS OF INSECTICIDE SPRAY AND BAIT TREATMENTS ON POPULATIONS OF RANGELAND GRASSHOPPERS

1989 ◽  
Vol 121 (7) ◽  
pp. 589-602 ◽  
Author(s):  
Mark A. Quinn ◽  
R.L. Kepner ◽  
D.D. Walgenbach ◽  
R.A. Bohls ◽  
P.D. Pooler ◽  
...  
Keyword(s):  
South Dakota ◽  
Abundant Species ◽  
Analysis Of Covariance ◽  
Melanoplus Sanguinipes ◽  
Important Species ◽  
Liquid Spray ◽  
Ageneotettix Deorum ◽  
Pre Treatment ◽  
And Control ◽  
Insecticide Spray

AbstractTwo, 1400-ha blocks of rangeland in western South Dakota were treated aerially with malathion liquid spray or carbaryl – bran bait in early July 1986 to determine the immediate and 2nd-year impact of treatments on grasshopper populations. Total grasshopper populations were reduced by 92 and 47% in the malathion and carbaryl – bran bait treatment plots, respectively, within 48 h after treatment and remained at a low level throughout the summer. Populations did not change in the control plots. Populations of the two most abundant species, Ageneotettix deorum (Scudder) and Melanoplus sanguinipes (F.), declined by 65 and 87%, respectively, in the carbaryl – bran bait plots but populations of bran "rejectors" (predominantly Trachyrhachys kiowa [Thomas]) did not change.Densities of the bran "acceptors" (Melanoplus spp., Phoetaliotes nebrascensis [Thomas], and A. deorum), as a group, did not change significantly in the control plots between the pre-treatment and July 1987 sampling dates. Densities within both sets of treatment plots were significantly lower in the 2nd year of the study than on the pre-treatment sampling date. Although 2nd-year populations of bran acceptors, as a group, did not increase to pre-treatment levels in the treated plots, populations of M. sanguinipes did increase to pre-treatment levels in both sets of treatment plots. Populations of bran rejectors generally remained low in treatment and control plots.Analysis of covariance of the densities of 2nd-year populations of total grasshoppers and bran rejectors indicated that treatment had no significant effect on populations of these grasshoppers, but the covariable, pre-treatment density, was significantly correlated with 2nd-year densities. Densities of 2nd-year populations of bran acceptors were also significantly correlated with pre-treatment densities.It was concluded that both the insecticidal spray and bait were effective in controlling most economically important species of rangeland grasshoppers. Although both treatments may have suppressed populations of bran acceptors, as a group, in the 2nd year of the study, neither suppressed populations of M. sanguinipes which increased to pre-treatment levels regardless of treatment. The effect of treatments on 2nd-year populations of bran rejectors could not be determined because populations of this group also declined in control plots.

scholarly journals Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Adele Brunetti ◽  
Francesca Macedonio ◽  
Giuseppe Barbieri ◽  
Enrico Drioli
Keyword(s):  
Current Status ◽  
Innovative Technology ◽  
Water Recovery ◽  
Treatment Unit ◽  
Treatment Stage ◽  
Treatment Technologies ◽  
Pre Treatment ◽  
And Control

Abstract The recent roadmap of SPIRE initiative includes the development of “new separation, extraction and pre-treatment technologies” as one of the “key actions” for boosting sustainability, enhancing the availability and quality of existing resources. Membrane condenser is an innovative technology that was recently investigated for the recovery of water vapor for waste gaseous streams, such as flue gas, biogas, cooling tower plumes, etc. Recently, it has been also proposed as pre-treatment unit for the reduction and control of contaminants in waste gaseous streams (SOx and NOx, VOCs, H2S, NH3, siloxanes, halides, particulates, organic pollutants). This perspective article reports recent progresses in the applications of the membrane condenser in the treatment of various gaseous streams for water recovery and contaminant control. After an overview of the operating principle, the membranes used, and the main results achieved, the work also proposes the role of this technology as pre-treatment stage to other separation technologies. The potentialities of the technology are also discussed aspiring to pave the way towards the development of an innovative technology where membrane condenser can cover a key role in redesigning the whole upgrading process.

scholarly journals Clinical outcomes of submassive pulmonary embolism thrombolysis—an Indian experience

2020 ◽  
Vol 72 (1) ◽  
Author(s):  
Nadeem U. Rehman ◽  
Mohd Iqbal Dar ◽  
Manish Bansal ◽  
R. R. Kasliwal
Keyword(s):  
Pulmonary Embolism ◽  
Pulmonary Artery ◽  
Systolic Dysfunction ◽  
Massive Pulmonary Embolism ◽  
Post Treatment ◽  
Control Group ◽  
Submassive Pulmonary Embolism ◽  
Venous Thromboembolic ◽  
Pre Treatment ◽  
And Control

Abstract Background Acute pulmonary thromboembolism is the most dangerous presentation of venous thromboembolic disease. The role of thrombolysis in massive pulmonary embolism has been studied extensively, but the same is not there for submassive pulmonary embolism. This study is aimed at evaluating the effects of thrombolysis in acute submassive pulmonary embolism. This was a prospective, case-control, observational study. Patients presenting with acute submassive pulmonary embolism were divided into thrombolysis group and control group depending on whether they received thrombolysis plus anticoagulation or anticoagulation only, respectively. Results A total of 86 patients were included in the study. Forty-two patients were in the thrombolysis group, and 44 patients were in the control group. The mean ± SD age in the control and thrombolysis groups was 63.3 ± 14.7 and 56.4 ± 13.8 years, respectively. The two groups were well matched in sex distribution and associated comorbidities like COPD, active surgery, major trauma, and immobilization. On echocardiography, dilated RA/RV in pre-treatment vs. post-treatment was seen in 20 (45.5%) vs. 20 (45.5%) in the control group and 26 (61.9%) vs. 11 (26.2%) in the thrombolysis group. Similarly, RV systolic dysfunction in pre-treatment vs. post-treatment was seen in 24 (54.5%) vs. 21 (47.7%) in the control group and 22 (52.4%) vs. 8 (19.0%) in the thrombolysis group. Pulmonary artery pressure in pre-treatment vs. post-treatment was 64.4 ± 15.0 vs. 45.9 ± 9.9 mmHg in the control group and 68.3 ± 17.4 vs. 31.4 ± 6.9 mmHg in the thrombolysis group. In control vs. thrombolysis group, there were 5 vs. 1 death, 6 vs. 1 hemodynamic decompensation, and 6 vs. 1 patient needing mechanical ventilation. Conclusion Thrombolysis in submassive pulmonary embolism is associated with better right ventricular functions, lower pulmonary artery pressures, and comparable mortality rates.

scholarly journals Effectiveness of Acceptance and Commitment Therapy on Anxiety and Depression of Razi Psychiatric Center Staff

2018 ◽  
Vol 6 (2) ◽  
pp. 410-415 ◽  
Author(s):  
Mostafa Heydari ◽  
Saideh Masafi ◽  
Mehdi Jafari ◽  
Seyed Hassan Saadat ◽  
Shima Shahyad
Keyword(s):  
Acceptance And Commitment Therapy ◽  
Analysis Of Covariance ◽  
Anxiety And Depression ◽  
Control Group ◽  
Center Staff ◽  
Commitment Therapy ◽  
Acceptance And Commitment ◽  
And Control ◽  
Psychiatric Center ◽  
Research Tools

AIM: Considering the key role of human resources as the main operator of organisations, the present research aimed to determine the effectiveness of acceptance and commitment therapy for anxiety and depression of Razi Psychiatric Center staff.MATERIALS AND METHODS: This research follows a quasi-experimental type with pre-test, post-test plans, and control group. Accordingly, 30 people were selected through volunteered sampling among Razi Psychiatric Center staff. Then, they were randomly placed into two groups of 15 (experimental and control) and evaluated using research tools. Research tools consisted of Beck Anxiety and Depression Inventories whose reliability and validity have been confirmed in several studies. Research data were analysed using the analysis of covariance (ANCOVA).Results: The statistical analysis confirmed the difference in the components of anxiety and depression in the experimental group, which had received acceptance and commitment therapy compared to the group that had not received any therapy in this regard (control group) (p < 0.05).CONCLUSION: Acceptance and commitment therapy reduces anxiety and depression.

Effects of Out-door Activities on Students’ Attitude towards Physics in Secondary Schools

2015 ◽  
Vol 3 (5) ◽  
pp. 126-131
Author(s):  
AWODUN ADEBISI OMOTADE ◽  
JEGEDE S.A
Keyword(s):  
Secondary Schools ◽  
Teaching Method ◽  
Sampling Technique ◽  
Analysis Of Covariance ◽  
Teaching Approaches ◽  
Control Groups ◽  
Conventional Teaching ◽  
Significant Difference ◽  
And Control ◽  
Senior Secondary

The study investigated the effects of out-door activities on students’ attitude towards learning of Physics in Senior Secondary School Physics in Ekiti State, Nigeria. The research design adopted in the study was Pretest-Posttest Quasi-experimental. The sample for the study was 150 Senior Secondary One (SSI) Physics students (this sample was divided into the experimental and control groups in ratio 1: 1 i.e. 75 in each group), selected through the multistage sampling technique from a total population of 7,852 SS I students offering Physics in all the 184 public Senior Secondary Schools in Ekiti State. The instrument used to collect relevant data from the subjects was Physics Attitudinal Scale (PAS). The reliability of the instrument was determined through the split-half method with the reliability coefficient of 0.83. Two null hypotheses were tested at 0.05 level of significance. The data collected were analysed using inferential statistics of t-test and Analysis of Covariance (ANCOVA). The results of the analyses showed that there was significant difference in the attitude of students to Physics in the experimental and control groups in favour of experimental group. Based on the findings of the study, it was recommended that non-conventional teaching approaches such as using out-door activities, should be introduced into the teaching of Physics in the nation’s secondary schools to reinforce the hitherto adopted conventional teaching method and Physics teachers should be encouraged to make use of these new teaching approaches.

Intensive Statin Therapy for Acute Ischemic Stroke to Reduce the Number of Microemboli: A Preliminary, Randomized Controlled Study

2018 ◽  
Vol 80 (3-4) ◽  
pp. 163-170 ◽  
Author(s):  
Xingyu Chen ◽  
Xiaorong Zhuang ◽  
Zhongwei Peng ◽  
Huili Yang ◽  
Liangyi Chen ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Statin Therapy ◽  
High Sensitivity ◽  
Controlled Study ◽  
Statin Group ◽  
Pre Treatment ◽  
Hs Crp ◽  
And Control ◽  
Intensive Statin Therapy

Background: To assess whether intensive statin therapy reduces the occurrence of microemboli in patients with acute ischemic stroke. Methods: Patients with acute ischemic stroke within 72 h of onset were randomized to the intensive statin (atorvastatin 60 mg/day, adjusted to 20 mg/day after 7 days) and control (atorvastatin 20 mg/day) groups. Combined aspirin and clopidogrel were used for antiplatelet therapy. Microemboli were monitored by transcranial Doppler on days 1 (pre-treatment), 3, and 7. Metalloproteinase-9 (MMP-9), high-sensitivity C-reactive protein (hs-CRP), and National Institutes of Health Stroke Scale (NIHSS) score were assessed on days 1 and 7. The modified Rankin scale (mRS) was used on day 90. The primary outcome was the proportion of patients with microemboli on day 3. Results: There were 35 (58.3%) and 30 (52.6%) patients with microemboli in the intensive statin (n = 60) and control (n = 57) groups, respectively, on day 1 (p = 0.342). On day 3, there were significantly less microemboli in the intensive statin group (n = 9; 15.0%) compared with controls (n = 16; 28.1%; p = 0.002). No difference was observed in MMP-9 and hs-CRP levels on day 1, but on day 7, MMP-9 (median 79.3 vs. 95.9 μg/L; p = 0.004) and hs-CRP (median 2.01 vs. 3.60 mg/L; p = 0.020) levels were lower in the intensive statin group compared with controls. There were no differences in NIHSS scores on days 1 and 7. There was no difference in mRS on day 90. Conclusion: Intensive atorvastatin therapy in patients with acute ischemic stroke reduces the occurrence of microemboli and inflammation, with no overt adverse events.

scholarly journals Effectiveness of Spiritual Therapy on Loneliness Feeling in the Seniors Present at Nursing Homes

2020 ◽  
Author(s):  
Batol Ramazani ◽  
Foroogh Bakhtiari
Keyword(s):  
Nursing Home ◽  
Elderly People ◽  
The Elderly ◽  
Analysis Of Covariance ◽  
Therapeutic Interventions ◽  
Control Group ◽  
Spiritual Therapy ◽  
Quasi Experimental ◽  
Research Findings ◽  
And Control

Background: Moving away from family can cause psychological and emotional trauma for the elderly. Accordingly, the present study aimed to evaluate the effectiveness of spiritual therapy on loneliness feeling among the elderly in a nursing home in Isfahan. Methods: The method was quasi-experimental with a pretest-posttest design and a control group. The population of this study included all of the elderly in Sadeghieh nursing home in Isfahan in 2018. The sample of this study included 30 elderly people being selected by purposive sampling and then randomly included in the experimental and control groups (15 elderly people in each group). The experimental group received the therapeutic interventions related to spiritual therapy at eight sessions of 90 minutes every week for two months. Then, the subjects in both groups were re-tested. The used instruments included Russell’s loneliness questionnaire (1996). After collecting the questionnaires and extracting the raw data, the data analysis was conducted using descriptive statistics and analysis of covariance by SPSS23 statistical software at 0.05 error level. Results: spiritual therapy had a significant effect on loneliness among the elderly in the nursing home (p < 0.001). In this regard, this therapy could reduce loneliness among the elderly in the nursing home. The effect of spiritual therapy on loneliness among the elderly in the nursing home was 53%. Conclusion: Based on the research findings, spiritual therapy can reduce loneliness among the elderly by the techniques such as taking responsibility, assigning cases to God, strengthening the intention, and deleting negative thoughts.

scholarly journals Phylogenetic and Ultrastructural Characterization of Bed Bugs in the Southwest of Iran

2020 ◽  
Author(s):  
Somayeh Bahrami ◽  
Ismaeil Alizadeh ◽  
Fatemeh Pazhoom ◽  
Susan Cork ◽  
Chukwunonso O.Nzelu ◽  
...  
Keyword(s):  
Abundant Species ◽  
Bed Bugs ◽  
Public Health Importance ◽  
Ultrastructural Characterization ◽  
Cimex Hemipterus ◽  
Southwest Of Iran ◽  
And Control ◽  
Prevalent Species ◽  
Disparity Index

Abstract Background: Bed bugs belong systematically to Order Hemiptera; Suborder Heteroptera; Family Cimicidae are of public health importance as ectoparasites of mammals and birds, however, only a few species are the putative ectoparasites of humans. Bed bugs are a wingless bloodsucking hemipterous bug (Cimex spp.) sometimes infesting houses and especially beds and feeding on human blood. Correct species identification is very important in order to design targeted strategies for surveillance and control of bed bugs in a given area. Methods: Adult bed bugs were collected from houses located in the southwest of Iran. The specimens were morphologically identified to the species level and then confirmed using molecular methods. Results: The mtDNA 16S rRNA sequences obtained from the specimens, and phylogenetic tree derived, showed that all the sequences belong to Cimex hemipterus. The Disparity Index among results showed that all the specimens were of a heterogeneous population. To the best of our knowledge, the leg structure of this species has not previously been documented and this is the first report of an open-closed rack system in the legs of C. hemipterus.Conclusions: Previous studies claimed that C. lectularius is the abundant species of Cimicids in Iran. But this investigation showed that C. hemipterus is the prevalent species in the southwest of Iran.

scholarly journals Measuring the sensitivity of difference-in-difference estimates to the parallel trends assumption

2021 ◽  
pp. 263208432110613
Author(s):  
Landon Gibson ◽  
Frederick Zimmerman
Keyword(s):  
Sensitivity Analysis ◽  
Treatment Period ◽  
Treatment Effect ◽  
Statistical Tests ◽  
Sensitivity Analyses ◽  
Difference In Difference ◽  
Control Groups ◽  
Pre Treatment ◽  
Background Difference ◽  
And Control

Background. Difference-in-Difference makes a critical assumption that the changes in the outcomes, over the post-treatment period, are similar between the treated and control groups—the parallel trends assumption. Evaluation of this assumption is often done either by graphical examination or by statistical tests in the pre-treatment period. They result in a binary conclusion about the validity of the assumption. Purpose. This paper proposes a sensitivity analysis that quantifies the departure from parallel trends necessary to meaningfully change the estimated treatment effect. Results. Sensitivity analyses have an advantage over traditional parallel trends tests: they use all available data and thereby work even if only one pre-period is available, and they quantify the strength of unobserved confounder(s) required to change the conclusions of a study. Conclusions. We apply the sensitivity analysis metrics developed by Cinelli and Hazlett (2020) and illustrate them on two studies.

scholarly journals Effectiveness of Neurofeedback Associated with Cognitive Rehabilitation Therapy on Children with Attention Defect Hyperactivity Disorder (ADHD)

2015 ◽  
Vol 2 (4) ◽  
Author(s):  
Mohammad Kianbakht ◽  
Sedighe Naghel ◽  
Freshte Alidadi ◽  
Vahid Nejati ◽  
Hossien Kohandel ◽  
...  
Keyword(s):  
Cognitive Rehabilitation ◽  
Analysis Of Covariance ◽  
Control Group ◽  
Meaningful Difference ◽  
Rehabilitation Therapy ◽  
Performance Factors ◽  
Positive Effects ◽  
Adhd Children ◽  
Cognitive Rehabilitation Therapy ◽  
And Control

Objectives: Neurofeedback is known as a modern therapy for hyperactive children, nevertheless it is not a complete therapy for these patients. The goal of this therapy is to create a complete therapy for ADHD children, so neurofeedback is used with cognitive rehabilitation therapy to make more integrated therapy. Method: this is an experimental study. 30 subjects were selected through random selection from women who referred to 5 clinics of Tehran city, and they were placed into 2 experimental groups and 1 control group. Groups are matched in age, sexuality and economic situation. One group just received neurofeedback into 10 sessions, another group received neurofeedback plus cognitive rehabilitation therapy at the same during, and control group received no therapy or they leaved the therapy at the first steps. Integrated visual and auditory test (IVA) was used as pretest and posttest, to measure two factors (attention and impulsivity) in ADHD children. Cognitive rehabilitation therapy protocol is based on work of Nejati (1391). Data evaluated by dependent T test and analysis of covariance. Results: according to findings, there is meaningful difference between all groups in attention and impulsivity factors. The group who received neurofeedback plus cognitive rehabilitation therapy showed more improvement in attention and impulsivity factors. Also there was a meaningful difference between neurofeedback group and control group in attention factor. Conclusion: neurofeedback is supposed as a facilitator therapy to improve attention factor in ADHD children, but not as a complete therapy, especially about performance factors. Also, it is better to use a complementary therapy such as cognitive rehabilitation therapy that focuses more on performance factors. It leads to more positive effects on impulsivity or even hyperactivity.

scholarly journals PERBEDAAN KEMAMPUAN KONEKSI MATEMATIK DAN BERPIKIR KREATIF DENGAN DISCOVERY LEARNING DAN DIRECT INSTRUCTION

Sepren ◽  
2020 ◽  
Vol 1 (02) ◽  
pp. 16-27
Author(s):  
Samuel Juliardi Sinaga
Keyword(s):  
Direct Instruction ◽  
Creative Thinking ◽  
Lesson Plan ◽  
Descriptive Analysis ◽  
Discovery Learning ◽  
Analysis Of Covariance ◽  
Learning Tools ◽  
Quasi Experimental ◽  
Creative Thinking Ability ◽  
And Control

ABSTRACT   This study was conducted based on low connection mathematical and creative thinking ability of students. The aim of this study was to determine: (1) whether the connection mathematical of students use Discovery Learning is different than Direct Instruction, (2) whether the creative thinking abilities students Discovery Learning is different than Direct Instruction, (3) the student answers use Discovery Learning variatever than Direct Instruction, (4) to responses the students used Discovery Learning very positive. This study is a quasi experimental research. The study population was all students of class VII SMP Swasta Ampera Batang Kuis consisting of three parallel classes. Of all students in grade VII students of two classes selected for the sample. The experimental class were treated Discovery Learning and control class were treated Direct instruction. In this research has developed several learning tools such as lesson plan and student activity sheets. The instrument used to collect data in this study are: (1) test the ability of connection mathematical, (2) test the ability creative thinking of students. The tests were used is in the form of a description. The test has been declared valid and reliable by the reliability coefficient of 0.814 and 0.878. Descriptive analysis is intended to describe the students' answers. Inferential analysis of data was done by analysis of covariance (ANACOVA). The results showed that: (1) The ability of connection mathematical of students used Discovery Learning is different  than Direct Instruction. This is evident from the results ANACOVA to F* = 14,559 is greater than Ftable = 4.052 with equation regression is for experiment class and  for control class (2) The ability creative thinking of students is different than Direct Instruction. This is evident from the results ANACOVA to F* = 9,113 is greater than Ftable = 4.052 with equation regression is  for experiment class and  for control class (3) The process of student answers by using Discovery Learning assisted open ended better than Direct Instruction (4) to responses the students positive.

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