1,731,652 research outputs found
Mitjaevia flexuosa Lin & Zhang 2022, sp. nov.
No full text4. Mitjaevia flexuosa Lin & Zhang sp. nov. (Figs 1m –p, 5) Description. Crown milky to pale yellow, with pair of brown round spots in the middle. Eyes gray marked with brownish. Face milky to yellow. Other features as in generic description (Figs 1m, n, o, p). Abdominal apodemes short and broad, extending to middle of sternite III (Fig. 5b). Anal tube short, without appendage (Fig. 5a). Pygofer lobe with few microsetae scattered on caudal part, hind margin rounded (Fig. 5a), dorsal appendage sinuate (Figs 5a, c). Subgenital plate expanded in the middle, several microsetae on subbasal convex part, 3 macrosetae in the middle (Fig. 5a). Connective Y-shaped, with manubrium long, central lobe developed (Fig. 5d). Style with apex relatively short and slim (Figs 5e, f). Aedeagus with both preatrium and dorsatrium developed, gonopore apical, aedeagal shaft with pair of basal processes on ventral side long and slim (Figs 5g, h). Measurement. Male 1.90–1.95mm. Material examined. Holotype: ♂, CHINA, Guangxi Prov., Guilin, 2018.VII.16, coll. Shuanghu Lin; Paratypes: 1♂, same data as holotype. Diagnosis. This new species is similar to M. elegantula, but has the pygofer lobe posterior margin rounded, the aedeagal shaft basal processes much thinner than the shaft, and the angle between aedeagal shaft and preatrium acute. M. elegantula has the pygofer lobe posterior margin angled, the aedeagal shaft basal processes almost the same width as the shaft, and the angle between aedeagal shaft and preatrium obtuse. Etymology. This specific epithet is derived from Latin word “flexuosus”, referring to the sinuate pygofer dorsal appendage.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on page 409, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
Mitjaevia tridentata Lin & Zhang 2022, sp. nov.
No full text6. Mitjaevia tridentata Lin & Zhang sp. nov. (Figs 1u–x, 7) Description. Crown milky to yellow, with pair of large black triangular spots in the middle. Coronal suture extending to 1/2 length of crown. Face slightly flat in profile. Eyes gray marked with yellow-brownish. Other structures as in generic description (Figs 1u, v, w, x). Abdominal apodemes divergent, only extended to the middle of sternite III (Fig. 7b). Anal tube short, with poorly developed appendage (Fig. 7a). Pygofer lobe with several microsetae scattered on ventral side and microtrichia scattered on caudal parts (Fig. 7a), dorsal appendage almost straight, produced medially, forming a small tooth (Figs 7a, c), apex of ventral appendage with 3 teeth (Fig. 7a). Subgenital plate with several microsetae scattered on distal part, distal part expanded, group of microsetae along upper margin of subbasal part merging to 1row near middle, finally extending to apical, 3 macrosetae near middle (Fig. 7a). Connective Y-shaped, with manubrium short and broad, central lobe distinct (Fig. 7d). Apex of style enlarged and inner margin produced (Figs 7e, f). Aedeagus with preatrium developed, longer than aedeagal shaft, aedeagal shaft tubular and slightly S-shaped in profile, with pair of long and slim basal processes, extending almost to gonopore, one angulate process on ventral side below basal processes, gonopore apical, a pair of small tooth-like subapical processes located near lower margin of gonopore on ventral side (Figs 7g, h). Measurement. Male 2.70–2.80mm, female 2.80mm. Material examined. Holotype: ♂, CHINA, Zhejiang Prov., Lishui, 2017.VII.30, coll. Shuanghu Lin; Paratypes: 4♂ 7♀, same data as holotype; 1♂, CHINA, Fujian Prov., Ningde, 2017.VII.24, coll. Shuanghu Lin; 1♀, CHINA, Zhejiang Prov., Zhoushan, 2017.VI.3, coll. Shuanghu Lin. Diagnosis. This new species is similar to M. protuberanta, but has the apex of the pygofer ventral appendage with 3 teeth, and the aedeagal shaft apex pointed in profile, with basal processes not extended to gonopore. M. protuberanta has the apex of the pygofer ventral appendage with only 1 tooth, and the aedeagal shaft apex rounded in profile, with basal processes extended to the gonopore. Etymology. The specific epithet is derived from the Latin prefix “tri-” and the Latin word “dentatus”, referring to the tridentate apex of the pygofer ventral appendage.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on page 412, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
LIN-2 and FRM-3 are required to maintain locomotory behaviour.
No full text(A) Genomic structure of lin-2 and frm-3 locus, mutant allele characterization, and protein architecture for LIN-2 and FRM-3. The whole promoter region of lin-2a and part of the kinase domain of LIN-2A is deleted in the e1309 mutants. The FERM domain in both frm-3a and frm-3b is deleted in the gk585 mutants. Syb1019 and syb1036 are stop codons in lin-2 and frm-3 that inactivate the expression of lin-2a and lin-2b, and frm-3a and frm-3b. (E, F) Locomotion speed is reduced by the loss of LIN-2 and FRM-3. Representative trajectories of locomotion in wild type (E) and mean locomotion speed in wild type, lin-2(e1309), frm-3(gk585), lin-2(syb1019), frm-3(syb1036), and lin-2(e1309);frm-3(gk585) mutants. To measure locomotion speed, young adult animals were washed with a drop of PBS and then transferred to fresh NGM plates with no bacterial lawn (30 worms per plate). Worm movement recordings (under room temperature 22°C) were started 10 min after the worms were transferred. A 2 min digital video of each plate was captured at 3.75 Hz frame rate by WormLab System (MBF Bioscience). Average speed and tracks were generated for each animal using WormLab software. To confirm the repeatability of the data, the locomotion speed was measured in two independent experiments in two days. For each mutant, around 10–40 animals were analyzed in one experiment. Significance was tested for each experiment. Data are mean ± SEM (**, p p < 0.001 when compared to wild type; n.s., non-significant; one-way ANOVA). The number of worms analyzed for each genotype is indicated in the bar.</p
Motaga rokfaoides Lin & Zhang 2023, sp. nov.
No full textMotaga rokfaoides Lin & Zhang sp. nov. (Figs 1e–h, 4) Description. The body shape and color pattern resemble Motaga rokfa Dworakowska, but crown vertex without dark spot (Figs 1e, f, g, h). Pygofer lobe with few microsetae on distal half (Fig. 4a). Dorsal appendage short and broad, apex pointed and slightly curved ventrad (Figs 4a, c). Subgenital plate with about 4 macrosetae (Fig. 4a). Style and connective resemble those of M. rokfa Dworakowska (Figs 4d, e, f). Aedeagal shaft slightly compressed, bifurcated at apex, with pair of basal appendages reaching gonopore, gonopore located in the upper 1/3 length of shaft on ventral surface (Figs 4g, h). Measurement. Male 2.40mm, female 2.40mm. Material examined. Holotype: ♁, CHINA, Yunnan Prov., Jinghong, 2017.IV.6, coll. Shuanghu Lin; Paratypes: 6♁ 4♀, same data as holotype. Remarks. This new species is similar to Motaga rokfa Dworakowska, but has the crown apex without a dark spot, the apex of the dorsal pygofer appendage not exceeding the hind margin of pygofer side, the hind margin of the pygofer side rounded, the gonopore located in the upper 1/3 of the aedeagal shaft on the ventral surface, and the aedeagal shaft almost straight in lateral view. Motaga rokfa Dworakowska has the crown with a dark spot, the pygofer dorsal appendage exceeding the posterior margin, the hind margin of the pygofer side angled, the gonopore near the middle of the ventral surface of the aedeagal shaft and the shaft curved dorsad in lateral view. Etymology. The specific epithet is derived from the species name “ rokfa ” and Greek suffix “- oides ”, referring to the similarity of this species to Motaga rokfa Dworakowska.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2023, Five new species and two new records of Erythroneurini from China (Hemiptera, Cicadellidae, Typhlocybinae), pp. 568-582 in Zootaxa 5227 (5) on pages 571-573, DOI: 10.11646/zootaxa.5227.5.4, http://zenodo.org/record/752329
Mitjaevia bisecta Lin & Zhang 2022, sp. nov.
No full text3. Mitjaevia bisecta Lin & Zhang sp. nov. (Figs 1i–l, 4) Description. Crown with color from milky to yellow, pair of large black spots in the middle. Eyes with basal part brownish, apical part blackish. Other characters as in generic description (Figs 1i, j, k, l). Abdominal apodemes short and broad, extending to the middle of sternite III (Fig. 4b). Anal tube moderately long with poorly developed appendage (Fig. 4a). Pygofer lobe with several microsetae scattered on ventral and caudal parts (Fig. 4a), dorsal appendage narrowing from middle to apex, apex pointed (Figs 4a, c). Subgenital plate with row of microsetae along outer margin, basal setae longer and forming a group, 3 macrosetae of different lengths near middle (Fig. 4a). Connective Y-shaped, with manubrium slim, central lobe developed (Fig. 4d). Style with apex slim and foot-like (Figs 4e, f). Aedeagus with dorsatrium rudimentary and preatrium developed, aedeagal shaft slightly compressed, gonopore in middle on ventral surface, aedeagal shaft connected with basal process by membranous structure, process bifurcated near middle or subapically, brunches of process continue close to each other (Figs 4g, h). Measurement. Male 2.80mm. Material examined. Holotype: ♂, CHINA, Sichuan Prov., Mianyang, 2018.Ⅴ.16, Yuru Yang; Paratypes: 1♂, same data as holotype. Diagnosis. This new species is similar to M. protuberanta, but has the pygofer dorsal appendage almost straight, the aedeagal shaft without processes subapically, and the pygofer side without a ventral process. M. protuberanta has the pygofer dorsal appendage curved, the aedeagal shaft with pair of tooth-like processes subapically, and the pygofer side with ventral process. Etymology. This specific epithet is derived from the Latin word “bisectus”, referring to the bisected ventral aedeagal process.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on page 409, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
[[alternative]]Application of critical concepts, anaerobic power and energy expenditure in predicting rowing performance
No full text[[abstract]]Application of critical concepts, anaerobic power and energy expenditure in predicting rowing performance
June,2005 Hsin-Fu Lin
Advisor: Jung-Charng Lin,
Abstract
Critical velocity (CV) and critical power (CP) have been proposed to be effective indirect anaerobic threshold methods in monitoring training and predicting performance of rowing respectively. The purpose of this study was to compare these two indexes in predicting indoor rowing performance by combining different physiological variables, including maximal oxygen uptake ( VO2max ), anaerobic threshold (AT4) and modified Wingate test, which are important physiological variables in endurance performance. In addition, whether or not the physiological variables (VO2, VCO2, VE, HR, [La-]) under these two critical intensities were stable was also examined. Fifteen elite female rowers (age 20.73± 1.44 years, height 1.64 ±0.35m, weight 56.64±4.38kg) were recruited in this study. VO2max (2.47 ±0.47L) and AT4(157.81 ±22.08W) were measured during a discontinuous graded exercise test, starting at 100W, on a Concept II ergometer increased by 25 W for each 3-min stage. Four test times of duration 90s, 240s, 600s, and 1200s were used to determine CP (139.49 ±20.37W), whereas CV( 4.00 ±0.14m/s) was estimated by 400m, 600m, 800m, 1000m maximal exertion trials in different days as well by using Linear distance-time model. Peak power (353.48 ±27.71W), maximum power (350.12 ±26.72W), minimum power (336.85 ±21.58W), mean power (314.44 ±27.87W), fatigue index (max power - min power/ mean power) were obtained using a modified Wingate test protocol (30s sprint) on the ergometer. Physiological variation of intensity at CV and CP, including VO2, VCO2, VE, HR, [La-], were measured every 5 minutes in 20-min constant rowing tests. The results of study showed that VO2max, AT4, CP, CV, peak power, mean power were significantly correlated with 2000 indoor rowing performance (r=?0.84, ?0.85, ?0.81, ?0.97, ?0.66, ?0.67, P<0.01). By submitting mean power, fatigue index, VO2max, AT4 with each index to a stepwise regression analysis, it produced two individual critical concept models as following to predict 2000 indoor rowing performance: CV model: T2000= ?131.83 CV(m/s)?1.00 fatugue index(%) +1023.91 (R2=0.96, SEE=4.10, p<.05); CP model: T2000=?22.59 VO2max(L/min)?.38AT4(W)+608.58 (R2 =0.82, SEE=8.05, p<.05). When rowing at CV on indoor ergometer (14±4 min), VO2, VE, HR, [La-] didn’t reach steady state and VCO2 was not different at different time points. Under CP, VO2, VCO2 didn’t change with time, however, there were significant difference of VE, HR, [La-] at different time points. Our findings in this study indicated that CV has more predictive power, representing as anaerobic threshold, than AT4 to predict rowing performance. Besides CV, fatigue index from modified Wingate test is also an important determinant for 2000-m performance of female rowers. Therefore, comparing with CP, CV could be used when applying critical concept in training and evaluate indoor performance in rowing. In addition, both two-parameter-derived CV and CP in rowing do not represent sustainable steady state intensities.
Key words: critical velocity, critical power, anaerobic power, energy expenditure, rowing, performance.
Values of parameters in the linearized (Lin) and nonlinear (N-Lin) fittings of isotherm models at 60 mg L<sup>-1</sup> Pb<sup>2+</sup> (solution pH = 6±0.2, contact time = 60 min, and adsorbent amount = 0.3 g).
No full textValues of parameters in the linearized (Lin) and nonlinear (N-Lin) fittings of isotherm models at 60 mg L-1 Pb2+ (solution pH = 6±0.2, contact time = 60 min, and adsorbent amount = 0.3 g).</p
Mitjaevia quinquedentata Lin & Zhang 2022, sp. nov.
No full text5. Mitjaevia quinquedentata Lin & Zhang sp. nov. (Figs 1q–t, 6) Description. Ground color milky. Crown with pair of large black spots in the middle. Eyes gray. Frontoclypeal area yellow with edge blackish, lorum white. Other features as in generic description (Figs 1q, r, s, t). Abdominal apodemes short and broad, extended to middle of sternite III (Fig. 6b). Anal tube moderately long, with poorly developed appendage (Fig. 6a). Pygofer side with about 3 stout setae on inner side of posterior margin (Fig. 6a), dorsal appendage bifurcated subapically, lower branch finger-like (Figs 6a, c), ventral appendage developed, apex pointed and exceeding posterior margin of pygofer lobe (Fig. 6a). Subgenital plate expanded subbasally, 2 rows of microsetae along upper margin of subbasal convex part, merging to 1 row near middle, finally extending to constricted region, 3 macrosetae on constricted region near outer margin, several microsetae scattered on caudal part (Fig. 6a). Connective Y-shaped, with manubrium moderately developed and central lobe developed (Fig. 6d). Apex of style enlarged with inner margin produced (Figs 6e, f). Aedeagus with dorsatrium relatively small, preatrium developed, aedeagal shaft tubular and slightly curved ventrad, with 5 small tooth-like processes on ventral surface and one triangular process fused to dorsal surface extended from near base to subapex in profile, gonopore apical (Figs 6g, h). Measurement. Male 2.95–3.05mm, female 2.95–3.05mm. Material examined. Holotype: ♂, CHINA, Shaanxi Prov., Yanan, 2021.IX; Paratypes: 2♂ 4♀, same data as holotype. Diagnosis. This new species is similar to M. wangwushana, but has the aedeagal shaft tubular and with 5 small tooth-like processes on the ventral surface and one triangular process fused to the dorsal surface, and the inner margin of the style apex produced. M. wangwushana has the aedeagal shaft compressed with a pair of large lamellate processes on the ventral surface, and inner margin of the style apex almost truncate. Etymology. This specific epithet is derived from the Latin word “quinquedentatus”, referring to the 5 small tooth-like processes on the ventral surface of the aedeagal shaft.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on pages 411-412, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
Singular-Space-Based Support model for M&A Prediction
No full textSince 1980, in the global competitive environment, M&A has gradually been valued by enterprises. M&A is one of the strategies used to increase the core competence of enterprises. M&A activities are like snowball development. However, data shows that M&A cases have risen year by year, but the failure is as high as 70% to 90%.
The reasons for the failure of M&A may exist in the internal and external environment of the enterprise. Many researches pointed out that to increase the success rate of M&A, it is necessary to choose the target that is consistent with its own company strategy. Research indicates that past mergers and acquisitions are too dependent on financial variables while ignoring other non-financial variables (i.e. culture, technology, environment) which led to financial variables that determine most of the mergers and acquisitions. In view of this, this paper defines the business environmental variables. When we add the business environmental variables to the financial variables, we calculate the scores of real M&A cases. We hope that by adding non-financial variables, we can improve the score of the forecast target and demonstrate the impact of non-financial variables on M&A target selection.
In order to reduce the high failure rate of mergers and acquisitions, we use SVD to help us remove the noise value and reduce the dimension. The results show that the method affects the results of the merger. The study analyzed the cases of mergers and acquisitions in Taiwan from 2014 to 2016 and verified them through leave-one-out cross verification. And when SVD is helpful for mergers and acquisitions, we try to explain the factors that are more important for mergers and acquisitions in the singular space.
We analyzed and summarized the managerial implications of this experiment. Finally, we identify the more important factors for M&A, which means that the relationship between these factors and factors in M&A decisions should be taken seriously
Highly Canalized MinD Transfer and MinE Sequestration Explain the Origin of Robust MinCDE-Protein Dynamics
Get PDFMin-protein oscillations in Escherichia coli are characterized by the remarkable robustness with which spatial patterns dynamically adapt to variations of cell geometry. Moreover, adaption, and therefore proper cell division, is independent of temperature. These observations raise fundamental questions about the mechanisms establishing robust Min oscillations, and about the role of spatial cues, as they are at odds with present models. Here, we introduce a robust model based on experimental data, consistently explaining the mechanisms underlying pole-to-pole, striped, and circular patterns, as well as the observed temperature dependence of the oscillation period. Contrary to prior conjectures, the model predicts that MinD and cardiolipin domains are not colocalized. The transient sequestration of MinE and highly canalized transfer of MinD between polar zones are the key mechanisms underlying oscillations. MinD channeling enhances midcell localization and facilitates stripe formation, revealing the potential optimization process from which robust Min-oscillations originally arose
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