Description of the female of Gnophopsodos ravistriolaria (Wehrli, 1922 (Lepidoptera: Geometridae)

Zootaxa ◽  
2019 ◽  
Vol 4586 (2) ◽  
pp. 391 ◽  
Author(s):  
JOSEPHA ERLACHER ◽  
SVEN ERLACHER
Keyword(s):  
Small Series ◽  
First Time ◽  
Locus Typicus

The genus Gnophopsodos Wehrli, 1945 has recently been under revision (Erlacher & Erlacher 2016). For three out of nine species belonging to the taxon, the females have hitherto been unknown, one of them being G. ravistriolaria. Material collected in the Sayan Mountains in 2015, about 25 km away from the locus typicus of G. ravistriolaria, and recently received, contained two males of that species and a single unknown female. The latter could clearly be assigned to the genus Gnophopsodos by their genitalia. We conclude that the female belongs to G. ravistriolaria based on the following: (1) it belongs to a small series further comprising two males that proved to be G. ravistriolaria based on genitalia characters; (2) all of the three specimens have been collected close to the locus typicus of G. ravistriolaria, where no sympatric Gnophopsodos species are known from; (3) the new female clearly differs from females of other Gnophopsodos species concerning its genitalia characters and (4) its habitus matches that of the known males, including the holotype. The female of G. ravistriolaria is now illustrated for the first time. 

scholarly journals Combination of Heme Oxygenase-1 Inhibition and Sigma Receptor Modulation for Anticancer Activity

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3860
Author(s):  
Giuseppe Romeo ◽  
Valeria Ciaffaglione ◽  
Emanuele Amata ◽  
Maria Dichiara ◽  
Loredana Calabrese ◽  
...  
Keyword(s):  
Heme Oxygenase ◽  
Anticancer Agents ◽  
Sigma Receptor ◽  
Heme Oxygenase 1 ◽  
Sigma Receptors ◽  
Proof Of Concept ◽  
Hybrid Compounds ◽  
Receptor Modulation ◽  
Small Series ◽  
First Time

Cancer is a multifactorial disease that may be tackled by targeting different signaling pathways. Heme oxygenase-1 (HO-1) and sigma receptors (Rs) are both overexpressed in different human cancers, including prostate and brain, contributing to the cancer spreading. In the present study, we investigated whether HO-1 inhibitors and R ligands, as well a combination of the two, may influence DU145 human prostate and U87MG human glioblastoma cancer cells proliferation. In addition, we synthesized, characterized, and tested a small series of novel hybrid compounds (HO-1/Rs) 14 containing the chemical features needed for HO-1 inhibition and R modulation. Herein, we report for the first time that targeting simultaneously HO-1 and R proteins may be a good strategy to achieve increased antiproliferative activity against DU145 and U87MG cells, with respect to the mono administration of the parent compounds. The obtained outcomes provide an initial proof of concept useful to further optimize the structure of HO-1/Rs hybrids to develop novel potential anticancer agents.

Tiefziehen mit additiv gefertigten Werkzeugen/Deep drawing with additively manufactured tools – Reduction of tooling cost

2021 ◽  
Vol 111 (11-12) ◽  
pp. 812-817
Author(s):  
Bernd Löffler ◽  
Günther Schuh ◽  
Georg Bergweiler ◽  
Falko Fiedler ◽  
Nikolaus Lackner
Keyword(s):  
Deep Drawing ◽  
Flexible Manufacturing ◽  
Manufacturing Processes ◽  
Small Series ◽  
First Time

Additiv gefertigte Tiefziehwerkzeuge versprechen aufgrund kürzerer Fertigungszeiten und geringerer Kosten erhebliche Vorteile bei der Produktion von Prototypen und Kleinserien. Am Werkzeugmaschinenlabor (WZL) der RWTH Aachen University wird erstmals ein additiv gefertigtes Kunststoffwerkzeug für das Tiefziehen eingesetzt. Durch das Verknüpfen dieser Technologie mit flexiblen Fertigungsverfahren lassen sich vollfunktionsfähige Tiefziehbauteile auch bei kleinen Stückzahlen wirtschaftlich herstellen.   Additively manufactured deep drawing tools offer considerable advantages in the production of prototypes and small series due to shorter manufacturing times and lower costs. The Werkzeugmaschinenlabor (WZL) of RWTH Aachen University is using for the first time an additively manufactured polymer toolfor deep drawing. By combining this technology with flexible manufacturing processes, it is possible to produce fully functional deep-drawn parts economically, even for small series.

scholarly journals Further steps of Cryptorchestia garbinii invasion in Polish inland waters with insights into its molecular diversity in Central and Western Europe

2020 ◽  
pp. 17
Author(s):  
Tomasz Rewicz ◽  
Jarosław Brodecki ◽  
Karolina Bącela-Spychalska ◽  
Alicja Konopacka ◽  
Michał Grabowski
Keyword(s):  
Western Europe ◽  
Molecular Diversity ◽  
Inland Waters ◽  
Dna Barcodes ◽  
Vistula River ◽  
Lake Garda ◽  
Oder River ◽  
Orchestia Cavimana ◽  
First Time ◽  
Locus Typicus

Cryptorchestia garbinii Ruffo, Tarocco and Latella, 2014 (Amphipoda: Talitridae), a semiterrestrial amphipod, reported (as Orchestia cavimana Heller, 1865) from the Polish inland waters, e.g., the lowermost Vistula River, for the first time in 2009. Now, we have reported this species from the upper Oder River, which is c.a. 350 km SE from the closest known localities near Berlin, Germany. We confirmed its identity by the DNA barcodes and showed that all individuals found so far in other countries in Central and Western Europe represent the same haplotype, excluding a singleton from the locus typicus of this species in Lake Garda, Italy.

scholarly journals The relationship among the Auletobius species of the subgenus Canarauletes and the description of a new species (Attelabidae: Rhynchitinae)

2020 ◽  
Vol 70 (1) ◽  
pp. 189-196
Author(s):  
Antonio Verdugo ◽  
Peter E. Stüben ◽  
Jose L. Torres ◽  
Pedro Coello
Keyword(s):  
Differential Diagnosis ◽  
New Species ◽  
Canary Islands ◽  
Distribution Area ◽  
Relationship Analysis ◽  
Almost All ◽  
First Time ◽  
The Relationship ◽  
A New Species ◽  
Locus Typicus

A new Auletobius species of the subgenus Canarauletes, Auletobius gaditanus spec. nov., is described from southern Spain. The report that the sister taxon Auletobius maroccanus Hoffmann, 1953 (Locus typicus: Morocco, Reggou, Moyen Moulouya) also occurs in Spain (Almeria: Punta del Sabinar) is corrected, because this specimen also belongs to the new species without doubt. In a morphological and molecular differential diagnosis, the new species is distinguished from the closest related species, and for the first time, a molecular relationship analysis (CO1) is presented for almost all species of the subgenus Canarauletes, whose main distribution area is in the Canary Islands and Madeira.   Taxonomic acts Auletobius gaditanus spec. nov. – urn:lsid:zoobank.org:act:17F6BFE9-974E-46B2-BA6E-05624044EAD7

Annulate lamellae in the Sertoli cells of guinea pig testis after unilateral torsion of the spermatic cord

1984 ◽  
Vol 42 ◽  
pp. 196-197
Author(s):  
J. Chakraborty ◽  
A. P. Sinha Hikim ◽  
J. S. Jhunjhunwala
Keyword(s):  
Sertoli Cells ◽  
Guinea Pigs ◽  
Spermatic Cord ◽  
Present Report ◽  
Cell Types ◽  
Annulate Lamellae ◽  
Spermatogenic Cells ◽  
Electron Microscopic ◽  
Structural Details ◽  
First Time

Although the presence of annulate lamellae was noted in many cell types, including the rat spermatogenic cells, this structure was never reported in the Sertoli cells of any rodent species. The present report is based on a part of our project on the effect of torsion of the spermatic cord to the contralateral testis. This paper describes for the first time, the fine structural details of the annulate lamellae in the Sertoli cells of damaged testis from guinea pigs.One side of the spermatic cord of each of six Hartly strain adult guinea pigs was surgically twisted (540°) under pentobarbital anesthesia (1). Four months after induction of torsion, animals were sacrificed, testes were excised and processed for the light and electron microscopic investigations. In the damaged testis, the majority of seminiferous tubule contained a layer of Sertoli cells with occasional spermatogonia (Fig. 1). Nuclei of these Sertoli cells were highly pleomorphic and contained small chromatinic clumps adjacent to the inner aspect of the nuclear envelope (Fig. 2).

Electron spectroscopic imaging and diffraction

1991 ◽  
Vol 49 ◽  
pp. 706-707
Author(s):  
M. Rühle ◽  
J. Mayer ◽  
J.C.H. Spence ◽  
J. Bihr ◽  
W. Probst ◽  
...  
Keyword(s):  
Materials Science ◽  
Electron Spectroscopic Imaging ◽  
Magnetic Filter ◽  
Magnetic Imaging ◽  
Illumination System ◽  
Probe Size ◽  
Diffraction Patterns ◽  
Fritz Haber ◽  
Koehler Illumination ◽  
First Time

A new Zeiss TEM with an imaging Omega filter is a fully digitized, side-entry, 120 kV TEM/STEM instrument for materials science. The machine possesses an Omega magnetic imaging energy filter (see Fig. 1) placed between the third and fourth projector lens. Lanio designed the filter and a prototype was built at the Fritz-Haber-Institut in Berlin, Germany. The imaging magnetic filter allows energy-filtered images or diffraction patterns to be recorded without scanning using efficient area detection. The energy dispersion at the exit slit (Fig. 1) results in ∼ 1.5 μm/eV which allows imaging with energy windows of ≤ 10 eV. The smallest probe size of the microscope is 1.6 nm and the Koehler illumination system is used for the first time in a TEM. Serial recording of EELS spectra with a resolution < 1 eV is possible. The digital control allows X,Y,Z coordinates and tilt settings to be stored and later recalled.

A Novel TEM Technique for Characterizing As-Grown CVD Diamond Films

1991 ◽  
Vol 49 ◽  
pp. 956-957 ◽  
Author(s):  
Z.L. Wang ◽  
J. Bentley ◽  
R.E. Clausing ◽  
L. Heatherly ◽  
L.L. Horton
Keyword(s):  
Diamond Films ◽  
Chemical Vapor ◽  
Growth Direction ◽  
Dark Field ◽  
Growth Surface ◽  
Specimen Preparation ◽  
Transmission Electron ◽  
Diffraction Patterns ◽  
First Time ◽  
Microstructural Studies

Microstructural studies by transmission electron microscopy (TEM) of diamond films grown by chemical vapor deposition (CVD) usually involve tedious specimen preparation. This process has been avoided with a technique that is described in this paper. For the first time, thick as-grown diamond films have been examined directly in a conventional TEM without thinning. With this technique, the important microstructures near the growth surface have been characterized. An as-grown diamond film was fractured on a plane containing the growth direction. It took about 5 min to prepare a sample. For TEM examination, the film was tilted about 30-45° (see Fig. 1). Microstructures of the diamond grains on the top edge of the growth face can be characterized directly by transmitted electron bright-field (BF) and dark-field (DF) images and diffraction patterns.

A microscopic marker experiment study on high temperature oxidation of Ni-Al alloy

1986 ◽  
Vol 44 ◽  
pp. 514-515
Author(s):  
Shou-kong Fan
Keyword(s):  
Transport Mechanism ◽  
High Temperature Oxidation ◽  
Transverse Section ◽  
Al Alloy ◽  
Metal Interface ◽  
Electron Microscopic ◽  
Temperature Oxidation ◽  
Analytical Electron ◽  
Microscopic Studies ◽  
First Time

Transmission and analytical electron microscopic studies of scale microstructures and microscopic marker experiments have been carried out in order to determine the transport mechanism in the oxidation of Ni-Al alloy. According to the classical theory, the oxidation of nickel takes place by transport of Ni cations across the scale forming new oxide at the scale/gas interface. Any markers deposited on the Ni surface are expected to remain at the scale/metal interface after oxidation. This investigation using TEM transverse section techniques and deposited microscopic markers shows a different result,which indicates that a considerable amount of oxygen was transported inward. This is the first time that such fine-scale markers have been coupled with high resolution characterization instruments such as TEM/STEM to provide detailed information about evolution of oxide scale microstructure.

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

Recent developments in low-voltage SEM of polymers

1993 ◽  
Vol 51 ◽  
pp. 866-867
Author(s):  
S.J. Krause ◽  
W.W. Adams
Keyword(s):  
Low Voltage ◽  
Chromatic Aberration ◽  
Thermal Electron ◽  
Analytical Technique ◽  
Recent Developments ◽  
Beam Currents ◽  
New Generation ◽  
First Time ◽  
Voltage Scanning ◽  
Beam Damage

Over the past decade low voltage scanning electron microscopy (LVSEM) of polymers has evolved from an interesting curiosity to a powerful analytical technique. This development has been driven by improved instrumentation and in particular, reliable field emission gun (FEG) SEMs. The usefulness of LVSEM has also grown because of an improved theoretical and experimental understanding of sample-beam interactions and by advances in sample preparation and operating techniques. This paper will review progress in polymer LVSEM and present recent results and developments in the field.In the early 1980s a new generation of SEMs produced beam currents that were sufficient to allow imaging at low voltages from 5keV to 0.5 keV. Thus, for the first time, it became possible to routinely image uncoated polymers at voltages below their negative charging threshold, the "second crossover", E2 (Fig. 1). LVSEM also improved contrast and reduced beam damage in sputter metal coated polymers. Unfortunately, resolution was limited to a few tenths of a micron due to the low brightness and chromatic aberration of thermal electron emission sources.

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