16,789 research outputs found
Odontochrydium arabicum Soliman & Rosa & Al Dhafer 2022, sp. nov.
No full text<i>Odontochrydium arabicum</i> Soliman & Rosa, sp. nov. <p>Figures 1–4</p> <p> <b>Type materials</b>. Holotype ♂, <b>Saudi Arabia</b>: Asir region, Abha, Wadi Mashwas [18°10’06”N 42°22’04”E, Alt. 1251 m], 20.XI.2015, leg. Ahmed M. Soliman, sweep net [KSMA]. Paratypes: 1 ♀, <b>Oman</b>: Dhofar, Wadi Magsail [16°52’00”N 53°43’00”E, Alt. 120 m], 2.X.2013, leg. M. Halada, sweep net [MHPC]; 1 ♂, <b>Oman</b>: Dhofar, 55 km W Salalah [16°49’05”N 53°37’12”E, Alt. 1000 m], 4.X.2021, leg. M. Halada, sweep net [MHPC]; 1 ♀, <b>Saudi Arabia</b>: Asir region, Marabah, Al-Hudaithy farm [17°50’53”N 42°23’11”E, Alt. 226 m], 9.III.2015, leg. Hasan A. Dawah, Malaise trap [FSPC]; 2 ♂, <b>Saudi Arabia</b>: Jazan region, Al-Aridah, Gabal Sala, Al-Matal [17°01’02”N 43°07’01”E, Alt. 290 m], 9.I.2022, leg. Ahmed M. Soliman, sweep net [KSMA, PRPC]; 1 ♀, <b>Saudi Arabia</b>: Jazan region, Al-Aridah, Wadi Haif [17°05’20”N 42°58’05”E, Alt. 289 m], 14.I.2022, leg. Ahmed M. Soliman, sweep net [KSMA]; 1 ♀, <b>Yemen</b>: Al Lahima, 16.X–31.XII.2000, leg. A.v. Harten & A.M. Hager, Malaise trap / RMNH Leiden ex collection ZMAN [RMNH]; 1 ♀, <b>Yemen</b>: Al Lahima, 9.IV–5.VI.2001, leg. A.v. Harten, Malaise trap [RMNH]; 1 ♀, <b>Yemen</b>: Wadi Aniz, SSW of Sana [15°00’00”N 44°09’00”E, Alt. 1520 m], 7.X.2006, leg. M. Halada, sweep net [MHPC].</p> <p> <b>Diagnosis</b>. Body metallic dark blue, with violet and greenish reflections (Figs 1, 4); mesoscutal median area reticulate-foveate, with two stout longitudinal ridges forming elongate fovea between ridges (Figs 2E, 4C); metasomal tergites sparsely, largely punctate (Figs 1B, 3C, 4C, D); T3 apico-median tooth longer to distinctly longer than lateral ones (Figs 3C, 4D); S1 and S2 with pair of widely separated black spots, adjacent to lateral margin of sternites (Fig. 3D).</p> <p> <b>Description</b> (Male holotype, Figs 1–3). Body length 5.2 mm. Forewing length 3.9 mm. OOL 1.75 × AOD; POL 2.5 × AOD; MS 1.0 × AOD; P and F1–F3 equal in length.</p> <p> <i>Colour</i> (Figs 1A–C, 2A–F, 3A–D). Body overall metallic dark blue, with slight greenish reflection on TFC, scapal basin, clypeus, pronotal dorsal face and mesopleuron, with violet reflection on T3; legs metallic blue, with tarsi dark brown; first tarsomeres with slight blue reflection; forewing, except hyaline R cell, slightly infumate, in particular 2R1 cell (Fig. 3A), hind wing hyaline; tegula metallic blue; S1 polish brown, with pair of black spots bounded by bluish reflection; S2 and S3 metallic blue, former polish brown anteriorly, with pair of black spots; scape and pedicel blue, flagellomeres black; mandible bluish on basal half, brown apically. The colour of the specimens while they are alive is bright green with some copper reflections, this colour gradually turns into dark blue after their death.</p> <p> <i>Pubescence</i> (Figs 1A, B, 3D). Body sparsely setose, setae whitish and short, about 1 × AOD, silvery, erect to suberect, denser and recumbent on S2 and S3.</p> <p> <i>Head</i> (Fig. 2A–D, F). Frons with strong TFC, weakly angulate medially, with branches encircling mid-ocellar area, forming kidney-shaped area, less deeply punctate than rest of vertex and almost polished around anterior ocellus; vertex and frons largely deeply punctate-reticulate; scapal basin deep, medially strongly, transversely ridged; laterally with small punctures between ridges and covered with suberect silvery setae, densely punctulate with similar setae along inner eye orbit; clypeus densely irregularly punctulate, with tiny dots mixed with small punctures, hardly convex on disc, relatively short, with subantennal distance 1.6 × AOD, with margin straight; antennal sockets close, about 0.4 × AOD apart; malar space finely reticulate-punctulate, about 1.0 × AOD; genal carina strong and complete; anterior ocellus and posterior ocelli lidded; mandible subdistally toothed.</p> <p> <i>Mesosoma</i> (Figs 1A, 2C–F, 3A). Pronotal shelf with two deep submedial pits, with polished median area; pronotal dorsal face largely punctate-subreticulate, with punctures up to 0.75 × AOD, and with interspaces micropunctate; with strongly incurved anterior margin, and posterior margin slightly incurved; with antero-median groove wide and relatively shallow, impunctate and polished on anterior 2/3, reaching more than 3/4 of pronotal length; pronotal humeral angles acute; mesoscutum foveate-reticulate on median lobe and on greater part of lateral lobes; punctate-subreticulate adjacent to tegula, with punctures up to 0.8 × AOD; median mesoscutal lobe with two stout longitudinal ridges and elongate fovea between ridges; tegula narrowed and partially hide; notauli complete, deeply, irregularly foveate; parapsidal furrows developed only until half mesoscutal length; mesoscutellum and metanotum subreticulate-punctate, the latter evenly rounded; propodeal lateral angle rather narrow, with blunt apex and incurved posterior margin; mesopleuron ventrally nearly smooth and armed with three strong teeth, dorsal teeth subequal; fourth sharp tooth present posteriorly on mesopleuron, before metapleuron. Forewing with distal area of Rs 1 × AOD apart from wing margin; M meets M+Cu before cu-a.</p> <p> <i>Metasoma</i> (Figs 2D, 3B–D). Exposed tergites sparsely setiferous punctate, interspaces between punctures smooth to finely punctulate; T3 convex and continuous in profile, without pre-pit swelling or post-pit sunken areas; pit row somewhat distinct, pits small, deep; T3 apical margin with three subtriangular teeth, median tooth slightly longer than lateral ones.</p> <p> <i>Genitalia</i> (Fig. 3E, F). Gonostyle hardly shorter than cuspis of volsella; apex of aedeagus digitate; digitus as long as cuspis.</p> <p> <b>Female (</b> Fig. 4A–D <b>)</b>. Similar to male except body with more violet tint, in particular on bottom of punctures; forewing darker; T3 distinctly acuminate posteriorly, with apico-median tooth distinctly longer than lateral ones.</p> <p> <b>Recognition</b>. The male of <i>Odontochrydium arabicum</i> <b>sp. nov.</b> is similar to the male of the African species <i>O. bicristatum</i> (paratype, Fig. 5A–F) by having mesoscutal median area reticulate-foveate, with two stout longitudinal ridges and T1–T3 sparsely largely punctate; it differs from the latter by: body generally metallic dark blue, sometimes with a little violet tint on T3 and on bottom of punctures (Figs 1, 3D), <i>vs</i>. metallic green in <i>O. bicristatum</i>, with a little bluish tint on mesoscutum, sometimes being rosy to golden red on the head, pronotum and metasomal tergites in prepared specimens (Fig. 5A–E), likely golden or red in nature; clypeus short, with subantennal distance 1.6 × AOD (Fig. 2A), <i>vs.</i> longitudinally elongate, with subantennal distance 2.0 × AOD (Fig. 5C); pronotum with large, deep and dense punctures (Fig. 2C), <i>vs.</i> pronotum with sparser and smaller punctures, not distinctly deep (Fig. 5B); mesoscutellum with sparse, large and round punctures, with wide interspaces bearing small dots (Fig. 2E), <i>vs.</i> mesoscutellum with dense, polygonal punctures without interspaces (Fig. 5B); metanotum with similar punctation, with large, round and deep punctures (Fig. 2D, E), <i>vs.</i> metanotum with dense, not particularly deepened polygonal punctures (Fig. 5B); propodeal lateral tooth obtuse apically (Fig. 2D), <i>vs</i>. sharp apically (Fig. 5B); T3 without longitudinal median ridge (Fig. 3C), <i>vs.</i> T3 with micropunctate longitudinal median ridge (Fig. 5D); apico-median tooth of T3 longer than lateral ones (Fig. 3C), <i>vs.</i> hardly longer than lateral teeth (Fig. 5D); S2 with longer and denser pubescence (Fig. 3D), <i>vs.</i> S2 with shorter and sparse setae (Fig. 5E); gonostyle hardly shorter than cuspis of volsella (Fig. 3E, F), <i>vs.</i> longer than cuspis of volsella in <i>O. bicristatum</i> (Fig. 5F).</p> <p> <b>Remarks</b>. Due to a fracture at the inner side of the genital gonocoxae of the holotype male genitalia (Fig. 3E), where they meet, during the preparation for photographing, we added a figure of a complete genital capsule of a paratype (Fig. 3G) in order to clarify the normal shape of the capsule.</p> <p> <b>Etymology</b>. The new species name refers to the Arabian Peninsula, where the type specimens were collected.</p> <p> <b>Distribution.</b> Oman, Saudi Arabia and Yemen.</p>Published as part of <i>Soliman, Ahmed M., Rosa, Paolo & Al Dhafer, Hathal M., 2022, Description of a new species of Odontochrydium Brauns (Hymenoptera: Chrysididae) from the Arabian Peninsula, pp. 287-295 in Zootaxa 5100 (2)</i> on pages 288-294, DOI: 10.11646/zootaxa.5100.2.8, <a href="http://zenodo.org/record/6145902">http://zenodo.org/record/6145902</a>
AFM study of the oxide film formed on dual phase Fe3Al-Fe3AlC intermetallies
No full textThe topography of the oxide film formed during initial stage of oxidation at 800 degreesC on the Fe3Al and Fe3AlC phases in an Fe- 16Al-0.5C alloy was analyzed using atomic force microscopy. The oxide film formed on the carbide phase was found to be thicker than that on the matrix, and the difference in thickness between two layers was around 0.5 mum. This was related to the presence of low Al content in the Fe3AlC phase compared with that in the Fe3Al phase. Due to different rate of oxidation in Fe3Al and Fe3AlC phases, the Fe- 16Al-0.5C alloy does not follow the parabolic rate behaviour. (C) 2004 Elsevier Ltd. All rights reserved.The author VSR thanks Prof. V.S. Raja of corrosion
science and engineering program, Indian Institute of
Technology, Bombay and Dr R.G. Baligidad of Defense
Metallurgical Research Laboratory, Hyderabad, India for
providing the material
Improvement vs consistency in performance judgments - replication and extension of Soliman and Buehler 2018
No full textThe project aims to conduct a close replication of Study 1 in Soliman and Buehler (2018): “Why improvement can trump consistent strong performance: The role of effort perceptions”, published in Journal of Behavioral Decision Making.
The registration contains a document describing our project and analysis plan in more detail
Open access self-archiving: An author study
No full textThis, our second author international, cross-disciplinary study on open access had 1296 respondents. Its focus was on self-archiving. Almost half (49%) of the respondent population have self-archived at least one article during the last three years. Use of institutional repositories for this purpose has doubled and usage has increased by almost 60% for subject-based repositories. Self-archiving activity is greatest amongst those who publish the largest number of papers. There is still a substantial proportion of authors unaware of the possibility of providing open access to their work by self-archiving. Of the authors who have not yet self-archived any articles, 71% remain unaware of the option. With 49% of the author population having self-archived in some way, this means that 36% of the total author population (71% of the remaining 51%), has not yet been appraised of this way of providing open access. Authors have frequently expressed reluctance to self-archive because of the perceived time required and possible technical difficulties in carrying out this activity, yet findings here show that only 20% of authors found some degree of difficulty with the first act of depositing an article in a repository, and that this dropped to 9% for subsequent deposits. Another author worry is about infringing agreed copyright agreements with publishers, yet only 10% of authors currently know of the SHERPA/RoMEO list of publisher permissions policies with respect to self-archiving, where clear guidance as to what a publisher permits is provided. Where it is not known if permission is required, however, authors are not seeking it and are self-archiving without it. Communicating their results to peers remains the primary reason for scholars publishing their work; in other words,
researchers publish to have an impact on their field. The vast majority of authors (81%) would willingly comply with a mandate from their employer or research funder to deposit copies of their articles in an institutional or subject-based repository. A further 13% would comply reluctantly; 5% would not comply with such a mandate
Average per-author h-index vs Average REF Impact Score.
No full textAverage per-author h-index vs Average REF Impact Score.</p
Differences Between Public & Private Embarrassment and (Symbolic) Coping Behavior - Direct vs. Indirect Questioning in Consumer Embarrassment
No full textPrevious research indicated that consumers experience two kinds of embarrassments. Embarrassment can either be a public or private emotion (Krishna et al., 2015). Extant studies also show that regarding public embarrassment, consumers use various coping strategies (Krishna et al., 2019). They can either employ cognitive and/or behavioral coping strategies (Krishna et al. 2019; Grace, 2007). Dong et al. (2013) revealed that consumers cope with embarrassing situations by engaging in symbolic behavior. Symbolic behavior evokes a specific concept that helps in coping with a situation. For instance, research shows that consumers choose sunglasses (a hiding product) and facial moisturizer (a face restoring product) in coping with public embarrassment. However, it is unclear how consumers cope with privately embarrassing situations. We found that consumers seem to engage in symbolic coping behavior only to a limited degree, depending on public and private embarrassment (Soliman, Frech et al. in preparation). To better understand the differences between public and private embarrassment and coping behavior, in this study we use direct and indirect questioning to investigate how consumer perceive embarrassing situations and how they (vs. a third person) will cope with the embarrassing situation
Patient-reported prevalence and symptomatic burden of uterine fibroids among women in the United States: findings from a cross-sectional survey analysis
No full textMahesh J Fuldeore, Ahmed M Soliman Health Economics and Outcomes Research, AbbVie Inc., North Chicago, IL, US Purpose: To estimate the prevalence of women diagnosed with uterine fibroids and the associated symptom burden in the US.Patients and methods: Responses of women aged 18–54 years, who completed an online survey, were analyzed. Data were weighted based on age, education, race, geographic region, income, and propensity score to derive national estimates of the prevalence of women diagnosed with uterine fibroids and associated symptom burden. Weighted means and percentages were reported. Prevalence across age and ethnic groups was examined. Symptom burden among women with and without uterine fibroids was compared using weighted logistic regressions.Results: Of 59,411 respondents who met study inclusion criteria, 7.7% reported receiving a diagnosis of uterine fibroids. Of these, 5,670 women (1,402 in the uterine fibroid group and 4,268 in the control group) were excluded from analysis because they had a hysterectomy. Among the non-hysterectomized study participants, 3,031 self-reported a diagnosis of uterine fibroids (prevalence: 5.8%, 95% confidence interval [CI]: 5.5%–6.1%); prevalence increased as women aged and was greatest in the 50–54 age group (11.4%; 95% CI: 10.4%–12.4%). In addition, prevalence was greater in black vs white women (9.8%; 95% CI: 8.7%–11.0% vs 5.4%; 95% CI: 5.1%–5.7%). A greater percentage of women with uterine fibroids (vs those without) experienced severe heavy menstrual bleeding (16.7% vs 7.7%), severe constipation/bloating/diarrhea (7.7% vs 4.7%), severe passage of clots (6.7% vs 2.4%), severe spotting/bleeding between periods (1.7% vs 1.0%), and severe pelvic pressure (1.6% vs 0.6%). Among uterine fibroid patients with these typical uterine fibroid-related symptoms, 56.4%, 32.3%, 26.4%, 25.8%, and 20.4% reported heavy menstrual bleeding, passage of clots, spotting/bleeding between periods, constipation/bloating/diarrhea, and pelvic pressure, respectively, as extremely bothersome.Conclusion: Uterine fibroids impose a heavy burden on women aged 18–54 years in the US. Keywords: frequency, leiomyoma, signs and symptoms, questionnaire 
The effects of dexmedetomidine and magnesium sulphate in adult patients undergoing endoscopic transnasal transsphenoidal resection of pituitary adenoma: A double-blind randomised study
No full textBackground and Aim: Transnasal transsphenoidal resection of pituitary tumours is associated with blood loss and wide fluctuations in haemodynamic parameters. The aim of the present study was to compare the effect of dexmedetomidine and magnesium sulphate during the transsphenoidal resection of pituitary tumours. Methods: The study was a double-blind, randomised study and included 152 patients classified randomly into two groups: Group D: Dexmedetomidine was given as a loading dose 1 μg/kg over 10 min before induction followed by an infusion at 0.5 μg/kg/h during the surgery. Group M: Magnesium sulphate was given as loading dose of 50 mg/kg over 10 min followed by an infusion at 15 mg/kg/h during the surgery. The systolic, diastolic and mean arterial blood pressures, in addition to the amount of blood loss were measured at specific timepoints. Data were described in terms of mean ± standard deviation, median, frequencies, 95% confidence of interval of mean and percentages. Results: Mean bleeding score was lower in Group D than Group M (1.36 ± 0.48 vs. 3.05 ± 0.65, respectively; P = 0.002). Mean blood loss was lower in Group D (157.43 ± 48.79 ml vs.299.47 ± 77.28 ml in Group M; P < 0.001)Heart rate, mean arterial pressure, fentanyl requirements, end-tidal sevoflurane concentration, and extubation and emergence times were lower, while incidence of bradycardia and hypotension were higher in Group D. Conclusions: During transsphenoidal pituitary resection, dexmedetomidine, compared to magnesium, is associated with lower blood loss and better operating conditions but with more hypotension and bradycardi
Proportion of junior vs. senior authors positioned first in the author byline of POA publications.
No full textProportion of junior vs. senior authors positioned first in the author byline of POA publications.</p
Compressible vs. incompressible pore water in fully-saturated poroelastic soil
No full textThis thesis aims to contribute to the understanding of how waves interact with soil. It is crucial for various applications in Civil Engineering to analyze the behaviour of soil and to understand the physics behind it. This master thesis contributes to this understanding via studying the impact of the boundary conditions on the model results with the aim of being able to model interaction between waves and soil.We assume a media that is poroelastic and fully-saturated, unless stated otherwise. We also assume that the porous media consists of incompressible soil particles and pore water particles that may either be compressible or incompressible. The main goals of this thesis are (1) to describe the response of porous media to transient hydraulic loads using numerical methods like the Finite-Element Method, and (2) to apply it to a one-dimensional case whereby a sandbed is subjected to waves. Currently, it is common to predict the changes in pore water pressures in porous media subjected to transient hydraulic loads using Biot’s model, which often assumes compressible pore water, assumes zero effective stresses on the surface of the seabed, and assumes that the wave load is completely carried by the pore water pressure only. Recently, a new model is proposed by Van Damme and Den Ouden-Van der Horst suggesting that transient hydraulic loads acting on a porous medium affect both the pore water pressures and effective stresses in soils. Note that this makes sure that the momentum balance equations are satisfied throughout the computational domain and its boundaries. The boundary conditions in this case do not satisfy Terzaghi’s effective stress principle, whereas the standard has been to impose Terzaghi’s effective stress principle when solving Biot’s equations. Terzaghi’s principle states that the sum of the effective stresses and pore water pressures must equal the hydraulic loads, whereas Biot’s model is in line with this principle.The model of Biot and the new model of Van Damme and Den Ouden-Van der Horst describe the physics differently which can have a large impact on the results. For example, the assumption of compressibility can significantly impact the distribution of the effective stress in the soil and thus the results.Biot’s model is more sensitive for changing the compressibility parameter than the new model. Both models give similar solutions to the water pressure. However, they give different solutions to the other variables like the volumetric strain and displacements which appear in both models. Furthermore, the new model in one dimension is in line with the momentum balance equations and satisfies the volume balance equation. On the other hand, the standard is to solve Biot’s model by imposing Terzaghi’s principle at the boundary. For the new model we found promising results for the water pressure, when validating with the data of two experiments. At the end, which model predict the best solutions for volumetricstrain, water pressure and displacements depends on what kind of problem the model is used for and the corresponding physics. The used code can be found at https://github.com/fpmklein/Compressiblevs.-incompressible-pore-water-in-fully-saturated-poroelastic-soil.https://github.com/fpmklein/Compressible-vs.-incompressible-pore-water-in-fully-saturated-poroelastic-soil The used code for this master thesis.Applied Mathematic
- …
