51,977 research outputs found
Bulletin: Number 779: Control of Virus Diseases of Stone Fruit Nursery Trees in New York
53 pages, 1 article*Control of Virus Diseases of Stone Fruit Nursery Trees in New York* (Gilmer, R. M.; Brase, K. D.; Parker, K. G.) 49 page
Stelis anthocopae Parker & Griswold, 2013, n. sp.
<i>Stelis anthocopae</i>, n. sp. <p>(Figs. 6, 16, 26, 36)</p> <p> <b>Diagnosis</b>. <i>Stelis anthocopae</i> can be distinguished from most Nearctic <i>Stelis</i> by the combination of the black body with pale tergal markings but no markings on the head, second recurrent vein basad second transverse cubital vein, and terga with distinct apical pubescent bands at least laterally. Among females with these traits only <i>S. anthocopae</i> and <i>S. paiute</i> have S6 not produced apically and T6 surrounding S6; from the latter <i>S. anthocopae</i> differs by its larger size (> 6.5mm vs. <5mm) and well defined, white, continuous or narrowly interrupted tergal bands (versus diffuse white lateral maculae connected by amber bands). Males with these traits differ in the combination of hind tibial spurs dark, and S4 with broad apical comb and no central depression.</p> <p> <b>Description</b>. Female. Length 7mm; forewing 5mm long. Black, the following parts reddish: mandible medially, junctions between femora and tibiae, tegula, wing veins at base; creamy-white wide horizontal submedian bands (interrupted medially) on T1 <b>–</b> T5, increasingly smaller spots apically; wings appearing dark (dark setae). Pubescence white, thickly plumose, recumbent on lower frons, clypeal area, more setose, erect, bordered by plumose hairs on vertex, summit of scutum, scutellum; recumbent, plumose on pleura, mesepisternum, femora; less branched, more erect on rest of legs, propodeum; sparse on metasoma, setose, longer laterally on T4 <b>–</b> T6, thin, plumose bands on apical margins of terga, S1 <b>–</b> S5; dense, short hair brush covering surface of S6. Punctation coarse, punctures deep, contiguous, basal zone of propodeum with cells laterally; surface shiny on scutum, scutellum; terga with coarser punctation than sterna; S6 with fine, close punctures. F1 apically, F2 basally contrasting in sculpture, F1 slightly shorter than F2 (0.8X), combined lengths of F1 and F2 subequal to F10; head broader than long; genal width equal to eye width; OOD = OPD, OPD> (1.1X) IOD, IOD> (2.5X) LMOD, OPD> (1.3X) LOP, DIOD> (1.1X) BLID; pronotal lobe carinate; apical tibial spines minute; scutellum overhanging metanotum; second recurrent vein ending basad second transverse cubital; T1 <b>–</b> T3, ~ 3X as wide as long, tergal profile in lateral view evenly curved, no subapical indentation; T6 with bluntly rounded apical margin, ~ 2X as wide as long (Fig. 16); S6 semicircular in outline, ~ 2X as wide as long; S2 <b>–</b> S5 with depressed apical borders (where row of plumose hairs produced).</p> <p> Male. Similar to female except: apical margin of S1 round, with plumose hair band; margin of S2 indented medioapically with small projection, overhanging margin in some, apical 1/3 bordered with red; S3 with prominent V-shaped tooth on medioapical margin, apical margin reddish with thick band of plumose hair (Fig. 26); S4 depressed mediosubapically with small (0.2X width of sternum) fine-toothed comb, apically with fringe of long, thick, plumose hair (Fig. 36); S5 with wide, shallow V-shaped apical emargination; S6 with truncate apical margin; S7 with narrowly truncate apical margin; S4 <b>–</b> S6 forming bowl-shaped depression.</p> <p> <b>Type material</b>. Holotype female. “CAL Riverside Co White Water Cyn. Reared F. D. Parker”/”Rearing No. 25638A”, [ex nest of <i>Atoposmia hypostomalis</i>]. Paratypes. CALIFORNIA, Riverside Co: 18 Ƥ, 19 3, same data as holotype, and reared from the same host; 1 3, 1 Ƥ, Blythe, 18 mi W, reared, FD Parker; 1 Ƥ, 29 Palms, 23 mi SE, reared, FD Parker; 5 3, 5 Ƥ, Thousand Palms, reared, FD Parker; Imperial Co: 2 3, 6 Ƥ, Glamis, reared, FD Parker; Inyo Co: 1 3, 2 Ƥ, Big Pine, 11 mi NE, reared, FD Parker; 1 Ƥ, Keeler, 24 mi E, reared, FD Parker; 1 Ƥ, Mesquite Spring, 1.5 mi S, 2000’, 16 Apr 1993, T Griswold; 1 Ƥ, Tuber Canyon, 9 Apr 1998, T Griswold, C Schultz; Kern Co: 1 Ƥ, Inyokern, 4 mi NE, 24 Apr 1960, DD Linsdale; San Bernardino Co: 2 Ƥ, Morongo Valley, 1 mi S, reared, FD Parker; 2 Ƥ, Cima, 5.1 air mi S, reared, T Griswold; 1 Ƥ, Kramer Hills, reared FD Parker; San Diego Co; 13 3, 20 Ƥ, Borego Springs, 2 mi W, reared FD Parker; 1 Ƥ Coyote Creek, Borego Valley, reared, FD Parker; 1 Ƥ, Ocotillo Valley, 3 mi W, reared, FD Parker; 2 Ƥ, Ocotillo, 9 mi W, reared, FD Parker. ARIZONA: 1 Ƥ, Big Bend Wash, reared, FD Parker. NEVADA, Clark Co: 1 3, Hidden Valley, 14 May 1998, <i>Baileya multiradiata</i>, K Receveur; 1 3, Overton, reared, FD Parker; 1 Ƥ, St. Thomas Gap, 0.4 mi E, 12 May 2005, R. Andrus; 4 3, Sheep Mountain, W, 4 May 1998, <i>Baileya multiradiata</i>, M Andres, K Keen; 1 Ƥ, same except T Griswold; 4 3, Sheep Mountain, W, 8 May 1998, <i>Baileya multiradiata</i>, T Griswold; 1 3, same except K Keen, K Receveur; 3 3, 3 Ƥ, Valley of Fire, reared, FD Parker; 1 Ƥ, White Sage Flat, 2.93 mi E, 8 Jun 2005, R Andrus. UTAH, Washington Co: 1 Ƥ, Hurricane, reared, FD Parker; 1 Ƥ, Warner Ridge, 10 km E Bloomington, 30 Apr 1993, G Bryant. Holotype deposited in BBSL, paratypes in BBSL and EMEC.</p> <p> <b>Biology</b>. <i>Stelis anthocopae</i> was reared from cells of <i>Atoposmia hypostomalis</i> (Michener) and <i>Hoplitis biscutellae</i> (Cockerell). Both of these host bees make complete cells in preexisting cavities (Parker 1975, Rust 1980). This cleptoparasite has been recorded visiting <i>Baileya multiradiata</i> and <i>Arctomecon</i>.</p> <p> <b>Distribution</b>. Known only from the Mojave and Sonoran Deserts of southern California, Nevada and Utah.</p> <p> <b>Etymology</b>. Derived from the traditional generic name for one of the host bees, what we now recognize as <i>Atoposmia.</i></p>Published as part of <i>Parker, Frank D. & Griswold, Terry, 2013, New species of the cleptoparasitic bee genus Stelis (Hymenoptera: Megachilidae, Anthidiini) from the Nearctic Region, pp. 529-544 in Zootaxa 3646 (5)</i> on pages 535-536, DOI: 10.11646/zootaxa.3646.5.3, <a href="http://zenodo.org/record/220406">http://zenodo.org/record/220406</a>
Sequences realized as Parker vectors of oligomorphic permutation groups
The purpose of this paper is to study the Parker vectors (in fact, sequences) of several known classes of oligomorphic groups. The Parker sequence of a group G is the sequence that counts the number of G-orbits on cycles appearing in elements of G. This work was inspired by Cameron's paper on the sequences realized by counting orbits on k-sets and k-tuples
Distal Lck Promoter–Driven Cre Shows Cell Type–Specific Function in Innate-like T Cells
Innate-like T cells, including invariant NKT cells, mucosal-associated invariant T (MAIT) cells, and g d T (gdT) cells, are groups of unconventional T lymphocytes. They play important roles in the immune system. Because of the lack of Cre recombinase lines that are specific for innate-like T cells, pan–T cell Cre lines are often used to study innate-like T cells. In this study, we found that distal Lck promoter–driven Cre (dLckCre) in which the distal Lck gene promoter drives Cre expression in the late stage of thymocyte development has limited function in the innate-like T cells using ROSA26floxed-Stop-tdTomato reporter. Innate-like T cells differentiate into mature functional subsets comparable to the CD4+ Th subsets under homeostatic conditions. We further showed that dLckCre-expressing gdT cells are strongly biased toward gdT1 phenotype. Interestingly, the gdT cells residing in the epidermis and comprising the vast majority of dendritic epidermal T cells nearly all express dLckCre, indicating dLckCre is a useful tool for studying dendritic epidermal T cells. Taken together, these data suggest that Lck distal promoter has different activity in the conventional and unconventional T cells. The use of dLCKcre transgenic mice in the innate-like T cells needs to be guided by a reporter for the dLckCre function
Adiabatic and Diabatic Energy Data for the Ground and First Excited Singlet States of CH₃NH₂
This data set includes adiabatic energies from XMS-CASPT2/6-31++G(d,p) calculations and diabatic energies and couplings calculated using the dipole-quadrupole diabatization method for the ground and first excited singlet states of methylamine (CH₃NH₂) at 1825 geometry points. This data was used to construct an analytical diabatic potential energy matrix.Parker, Kelsey A; Truhlar, Donald G. (2020). Adiabatic and Diabatic Energy Data for the Ground and First Excited Singlet States of CH₃NH₂. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/4f95-ex37
Direct numerical test of the B-G-K model equation by the DSMC method
In the present paper the rarefied gas how caused by the sudden change of the wall temperature and the Rayleigh problem are simulated by the DSMC method which has been validated by experiments both in global flour field and velocity distribution function level. The comparison of the simulated results with the accurate numerical solutions of the B-G-K model equation shows that near equilibrium the BG-K equation with corrected collision frequency can give accurate result but as farther away from equilibrium the B-G-K equation is not accurate. This is for the first time that the error caused by the B-G-K model equation has been revealed
G. K. Chesterton Portrait, Detail
This image is a detail of the oil portrait of the British author G. K. Chesterton (1874–1936), painted by Edwin Swan.https://collected.jcu.edu/chestertonimages/1001/thumbnail.jp
ATP dependence of K-Cl cotransport in dog red blood cells
Swelling-induced K-Cl cotransport in resealed dog red blood cell ghosts requires the presence of an ATP-generating system (G. C. Colclasure and J. C. Parker. J. Gen. Physiol. 100: 1-10, 1992). The present study shows that the endogenous adenine nucleotide present in the dog ghosts is sufficient to activate K-Cl cotransport, provided that creatine phosphate is incorporated in them. Creatine kinase is not required, because dog red blood cells, unlike those of humans, possess this enzyme. Although some ATP appears to be required for K-Cl cotransport by dog ghosts, an excess of this nucleotide is inhibitory. Creatine phosphate appears to play a special role in generating the ATP required for activation of K-Cl cotransport. If ghost ATP content is manipulated in the absence of creatine phosphate, by simply adding ATP to the hemolysate, no stimulation of K-Cl cotransport occurs. On the other hand, when creatine phosphate is present, K-Cl cotransport is activated. The results are discussed in relation to current views regarding the role of ATP in activation of K-Cl cotransport and the concept of the "phosphocreatine shuttle."</jats:p
Research at the Eastern Ohio Resource Development Center [1967]
Facts about the Eastern Ohio resource development center -- Soils of the Eastern Ohio Resource Development Center / N. Holowaychuk and G. F. Hall -- Landslips in Southeastern Ohio / K. R. Everett, G. F. Hall and N. Holowaychuk -- Beef cattle breeding / E. W. Klosterman, C. F. Parker and V. R. Cahill -- Feeding value of Diammonium phosphate and urea when fed in a dry supplement or when added to chopped whole plant corn at time of ensiling / E. W. Klosterman, K. E. McClure and V. R. Cahill -- Year-round pasture for beef cows / R. W. Van Keuren -- Electric fencing for sheep / C. F. Parker -- Sheep research for Eastern Ohio / C. F. Parker -- Apple cultivar and rootstock evaluation trials for Southeastern Ohio / F. S. Howlett -- Grape research in Southeastern Ohio / G. A. Cahoon -- The peach orchard / R. G. Hill, Jr. -- Elderberry evaluation / R. G. Hill, Jr. -- Stripmine reclamation research plans for Unit 2 / P. Sutto
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