A Survey of Native Bees and Their Floral Use in Portland\u27s Urban Orchards

Native bees are all around us, yet very few surveys have been performed on which bees reside in Portland, Oregon. For this honors thesis, native bees collected from two urban orchards and one botanical garden located in eastern Portland in 2018 and 2019 were identified to genus or to species, and their floral use recorded. This data will become part of the ongoing native bee survey being performed by Susan Masta\u27s laboratory and the Museum of Natural History at Portland State University. The bees that were most commonly collected included Ceratina spp. (n = 42), Andrena spp. (n = 34), Halictus spp. (n = 29), and Bombus spp. (n = 21). Observations made during these collections suggest that a diversity of floral resources, but especially ornamental plants within Asteraceae, Rosaceae, and Boraginaceae (notably genera Erigeron, Symphyotrichum, Fragaria, and Pentaglottis) may support a wide diversity of native bees in an urban or suburban orchard setting over the greatest proportion of native bee flight seasons

Ecosystem Jenga!

Students are often taught that ecosystems are delicately balanced, But what. exactly, does this mean? How do we help students relate what they learn in the classroom about ecosystems to the world immediately around them? As scientists who work closely with middle school students as part of a National Science Foundation-funded Graduate Fellows in K-12 Education program called Project Fulcrum. we have learned that abstract concepts, such as delicately balanced ecosystem, are often not truly understood. We addressed this concern in a seventh-grade science classroom in Lincoln. Nebraska. by introducing students to locally threatened saline wetlands and the endangered Salt Creek tiger beetle (see Figure 1). To give students a tangible model of an ecosystem and have them experience what could happen if a component of that ecosystem were removed, we developed a hands-on. inquiry-based activity that visually demonstrates the concept of a delicately balanced ecosystem through a modification of the popular game Jenga. This activity can be modified to fit classrooms in other regions by focusing on a locally endangered plant or animal. which can be determined by contacting local governmental agencies (e.g .. Department of Natural Resources)

Sistem Pengaman Rumah Berbasis Sensor Pir, Camera Jpeg, Memori SD, dan SMS yang Tahan Pemadaman Listrik

Based on kapolda metrojaya\u27s data, recorded many cases of theft house in Jakarta in 2012 amounted to 113 cases, while in 2013 there are 60 cases of theft. (Tribunnews.com, Jakarta, 2013). Increasing the crime rate in Indonesia. Make a security very important. Thus we need home security technology system to felt save. So the author want to develop a home security system that is efficient, convenient, and can keep running even when the power goes out. This activity is done by theoretical studies, based on existing theories and make modifications based on the results. At the end of the activities of a team of writers will produce a prototype system based home security PIR sensor, camera JPEG, SD memory and SMS are resistant to power outages which can run well. The products of this technology is expected to produce a new breakthrough for the security system in Indonesia

Growth Rate Differences of Chrysomya SP. Larvae on Rattus Novergicus Wistar Strain Corpse Exposed and Unexposed to Ephedrine Toxic Dose

Post Mortem Interval (PMI) is used as a parameter to define the onset, cause, manner, and time of death to help maintenance of law and identify crime victims by the age of the larvae found. Larval growth is influenced by the temperature, humidity, and contaminant (drug or toxic). This experiment used two media of dead rats (200 grams), one given ephedrine of LD50 = 266 mg/kg and the other without ephedrine. Both were put in 2 cages each containing 50 Chrysomya sp. Ten larvae were randomly taken every day for 14 days to be measured their length, weight, and duration of growth. The 3rd larvae stage in the media with ephedrine had weight gain on 5th – 6th day morning, while larvae in media without ephedrine had static weight gain on 5th day morning - afternoon and weight decrement on 6 – 7th day morning. Larva\u27s peak ratio of length/weight in the media with ephedrine was higher than that of larvae in the media without ephedrine. Larvae on media with ephedrine grew faster in 1st, 2nd, 3rd larvae stage, and pupal stage compared to larvae without ephedrine. Therefore, this study indicates that ephedrine can accelerate the growth rate of Chrysomya sp. larvae

Self-Definition of Women Experiencing a Nontraditional Graduate Fellowship Program

Women continue to be underrepresented in the fields of science, technology, engineering, and mathematics (STEM). One factor contributing to this underrepresentation is the graduate school experience. Graduate programs in STEM fields are constructed around assumptions that ignore the reality of women’s lives; however, emerging opportunities may lead to experiences that are more compatible for women. One such opportunity is the Graduate Teaching Fellows in K–12 Education (GK–12) Program, which was introduced by the National Science Foundation in 1999. Although this nontraditional graduate program was not designed explicitly for women, it provided an unprecedented context in which to research how changing some of the basic assumptions upon which a graduate school operates may impact women in science. This exploratory case study examines the self-definition of 8 women graduate students who participated in a GK–12 program at a major research university. The findings from this case study contribute to higher education’s understanding of the terrain women graduate students in the STEM areas must navigate as they participate in programs that are thought to be more conducive to their modes of self-definition while they continue to seek to be successful in the historically Eurocentric, masculine STEM fields

Super-recognisers: face recognition performance after variable delay intervals

Outstanding long‐term face recognition of suspects is a hallmark of the exceptionally skilled police ‘super‐recognisers’ (SRs). Yet, research investigating SR's memory for faces mainly employed brief retention intervals. Therefore, in Experiment 1, 597 participants (121 SRs) viewed 10 target videos and attempted identification of targets from 10 target‐present line‐ups after 1–56 days. In Experiment 2, 1,421 participants (301 SRs) viewed 20 target videos, and after a baseline of no delay to 28 days,—10 target‐present and 10 target‐absent line‐ups, to assess correct line‐up rejections. Overall, delay positively correlated with hits but not with correct rejections. Most, but not all SRs, made more correct identifications and correct rejections than controls at all retention intervals, demonstrating that many SRs possess enhanced long‐term face memory. This research adds to the knowledge of SR's skillsets, and enhances the case for the selection of SRs to identity critical roles—particularly policing

Flooding tolerance of four tropical peatland tree species in a nursery trial

In order to facilitate hydrological restoration, initiatives have been conducted to promote tree growth in degraded and rewetted peatlands in Indonesia. For these initiatives to be successful, tree seedlings need to be able to survive flooding episodes, with or without shade. We investigated the survival rates and the formation of adventitious roots in the case of four tree species exposed to combinations of different shading and water levels under controlled conditions in a nursery, with artificial rainwater and with peat soil as the medium. The research focused on the following questions (i) whether trees can grow on flooded peat soils; and (ii) which plant traits allow plants to cope with inundation, with or without shade. The four tree species compared (Shorea balangeran, Cratoxylum arborescens, Nephelium lappaceum and Durio zibethinus) include two natural pioneer and two farmer-preferred fruit trees. The experiment used a split-split plot design with 48 treatment combinations and at least 13 tree-level replicates. The study found that S. balangeran and C. arborescens had relatively high survival rates and tolerated saturated condition for 13 weeks, while N. lappaceum and D. zibethinus required non-saturated peat conditions. S. balangeran and C. arborescens developed adventitious roots to adapt to the inundated conditions. D. zibethinus, S. balangeran and N. lappaceum grew best under moderate (30%) shading levels, while C. arborescent grew best in full sunlight

The Use of Molecular Analyses in Voided Urine for the Assessment of Patients with Hematuria

Introduction:Patients presenting with painless hematuria form a large part of the urological patient population. In many cases, especially in younger patients, the cause of hematuria is harmless. Nonetheless, hematuria could be a symptom of malignant disease and hence most patients will be subject to cystoscopy. In this study, we aimed to develop a prediction model based on methylation markers in combination with clinical variables, in order to stratify patients with high risk for bladder cancer.Material and Methods:Patients (n=169) presenting with painless hematuria were included. 54 patients were diagnosed with bladder cancer. In the remaining 115 patients, the cause of hematuria was non-malignant. Urine samples were collected prior to cystoscopy. Urine DNA was analyzed for methylation of OSR1, SIM2, OTX1, MEIS1 and ONECUT2. Methylation percentages were calculated and were combined with clinical variables into a logistic regression model.Results:Logistic regression analysis based on the five methylation markers, age, gender and type of hematuria resulted in an area under the curve (AUC) of 0.88 and an optimism corrected AUC of 0.84 after internal validation by bootstrapping. Using a cut-off value of 0.307 allowed stratification of patients in a low-risk and high-risk group, resulting in a sensitivity of 82% (44/54) and a specificity of 82% (94/115). Most aggressive tumors were found in patients in the high-risk group. The addition of cytology to the prediction model, improved the AUC from 0.88 to 0.89, with a sensitivity and specificity of 85% (39/46) and 87% (80/92), retrospectively.Conclusions:This newly developed prediction model could be a helpful tool in risk stratification of patients presenting with painless hematuria. Accurate risk prediction might result in less extensive examination of low risk patients and thereby, reducing patient burden and costs. Further validation in a large prospective patient cohort is necessary to prove the true clinical value of this model