Impact of a Kelvin Source Connection on Discrete High Power SiC-MOSFETs

2018 ◽  
Vol 924 ◽  
pp. 723-726 ◽  
Author(s):  
Christian Bödeker ◽  
Edgar Ayerbe ◽  
Nando Kaminski
Keyword(s):  
High Power ◽  
Switching Behavior ◽  
Common Source ◽  
Strong Restriction ◽  
The Common ◽  
Load Circuit

Standard packages like the TO-247-3L impose a strong restriction on the performance of SiC-transistors. The limitation arises predominantly from the common source inductance LS that is shared between the gate loop and the load circuit. To avoid this parasitic influence, advanced packages like the TO-247-4L or TO-263-7L offering a Kelvin source connection have been introduced. In this work, the influence of a Kelvin source connection on the switching behavior of a high power SiC-MOSFET is investigated.

Modulating 2D Heterointerface with g-C3N4 Meshes: A Suitable Hetero-Layered Architecture for High-Power and Long-Life Energy Storage

2021 ◽  
Author(s):  
Yunping Wu ◽  
Wei Wei ◽  
Tianyi Ding ◽  
Sheng Chen ◽  
Rui Zhai ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Power ◽  
2D Materials ◽  
Two Dimensional ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Efficient Energy ◽  
Layered Architecture ◽  
The Common ◽  
Long Life

Two-dimensional (2D) heterostructures combine the advantageous features of different 2D materials and represent advanced electrode architectures for development of efficient energy storage devices. However, the common 2D heterostructures made by...

No, I’m not… Chaucer? The Arabic motif in Troilus and Criseyde and Pushkin’s ‘The Prophet’ [‘Prorok’]

2021 ◽  
pp. 140-153
Author(s):  
A. A. Shapovalova
Keyword(s):  
Direct Contact ◽  
Common Source ◽  
Long Poem ◽  
Troilus And Criseyde ◽  
Potential Influence ◽  
Religious Texts ◽  
Common Motif ◽  
Courtly Romance ◽  
Genetic Source ◽  
The Common

The article discusses two works of literature: Troilus and Criseyde, a long poem written in the genre of courtly romance (1382–1386/1387) by G. Chaucer, and ‘The Prophet’ [‘Prorok’] (1826), a poem by A. Pushkin. The two works are compared due to a common motif: the opening of the chest and swapping of the heart as a sign of the person’s spiritual regeneration. In her comparative analysis of the two poems, the author attempts to identify their common source or the likelihood of direct contact — whether Pushkin had come across Chaucer’s work and borrowed the motif directly. As for the heart being replaced, it seems both poets may have been inspired by several biblical stories. Further analysis of the motif of the chest being opened suggests that the research should focus on the Arabic tradition alone and take into account the potential influence of Islamic religious texts on Pushkin as well as Chaucer. Relying on the available data about Russian and European relations with the Arabic world, the article hypothesises about the ways in which the motif in question could have reached each of the poets. The author names the Quran as the common genetic source of the two poems.

scholarly journals Najib Hamadani and Ahmed at-Tusi’s Bulgarian oikonyms and their location in the former Volga Bulgaria

2016 ◽  
Vol 5 (3) ◽  
pp. 91-96
Author(s):  
Nikolay Valeryevich Belenov
Keyword(s):  
Historical Geography ◽  
Good Reason ◽  
Common Source ◽  
Present Stage ◽  
Medieval Manuscripts ◽  
Study Research ◽  
Folklore Studies ◽  
The Common ◽  
Information Borrowing ◽  
The Given

This article attempts to localize the fortresses of the Volga Bulgars (first of all, fortresses Marj and Tehshu) known from medieval authors reportedly Najib Hamadani and Ahmed at-Tusi. In the course of solving this problem the question of these authors data reliability is raised, as well as the common source of this information borrowing. There is a good reason to see this in the source known among the Arab-Persian historical and geographical medieval manuscripts as Rizal by Ahmed ibn Fadlan, the Secretary of Abbasid embassy to the Volga Bulgars Elteber Almush, who visited the Volga in 922. This fact explains the absence of Bulgarian cities known from other sources in the given lists as well as the question of uniqueness of Hamadani and at-Tusis information. On the basis of the sources synthesis, place-and folklore studies, the article proposes some options for localization of some of these forts and etymology options of Bulgarian oikonyms mentioned in the papers by the considered authors. The author proves the importance of place names data at the present stage of Bulgar study research, especially of Volga Bulgaria historical geography as well as further studies are planned.

scholarly journals Philosophical and legal foundations of the doctrine Marsil of Padua about the state

2020 ◽  
pp. 33-43
Author(s):  
А.А. Борзов
Keyword(s):  
Theoretical Basis ◽  
The State ◽  
State Sovereignty ◽  
Common Source ◽  
Legal Doctrine ◽  
Essential Unity ◽  
Legal Foundations ◽  
The Common

Учение представителя раннего итальянского гуманизма, выдающегося философа и правоведа, Марсилия Падуанского [1270(80) – 1342(43)] о государстве актуализирует платоновские политико-правовые идеалы. Мысль Платона о сущностном единстве человека и государства, формируемом общим источником их добродетели – идеей справедливости, составляет теоретическое основание гуманизма падуанца, его философско-правового учения о совокупной воле людей как источнике государственного суверенитета. The teaching of the representative of early Italian humanism, an outstanding philosopher and lawyer, Marsil of Padua [1270 (80) - 1342 (43)] about the state actualizes Plato's political and legal ideals. Plato's thought about the essential unity of man and the state, formed by the common source of their virtue - the idea of ​​justice, constitutes the theoretical basis of Padua's humanism, his philosophical and legal doctrine of the collective will of people as a source of state sovereignty.

scholarly journals Design of W-Band GaN-on-Silicon Power Amplifier Using Low Impedance Lines

2021 ◽  
Vol 11 (19) ◽  
pp. 9017
Author(s):  
Jinho Jeong ◽  
Yeongmin Jang ◽  
Jongyoun Kim ◽  
Sosu Kim ◽  
Wansik Kim
Keyword(s):  
Power Density ◽  
Output Power ◽  
Power Amplifier ◽  
High Power ◽  
Common Source ◽  
High Electron ◽  
Large Signal ◽  
Power Added Efficiency ◽  
W Band ◽  
Gan On Si

In this paper, a high-power amplifier integrated circuit (IC) in gallium-nitride (GaN) on silicon (Si) technology is presented at a W-band (75–110 GHz). In order to mitigate the losses caused by relatively high loss tangent of Si substrate compared to silicon carbide (SiC), low-impedance microstrip lines (20–30 Ω) are adopted in the impedance matching networks. They allow for the impedance transformation between 50 Ω and very low impedances of the wide-gate transistors used for high power generation. Each stage is matched to produce enough power to drive the next stage. A Lange coupler is employed to combine two three-stage common source amplifiers, providing high output power and good input/output return loss. The designed power amplifier IC was fabricated in the commercially available 60 nm GaN-on-Si high electron mobility transistor (HEMT) foundry. From on-wafer probe measurements, it exhibits the output power higher than 26.5 dBm and power added efficiency (PAE) higher than 8.5% from 88 to 93 GHz with a large-signal gain > 10.5 dB. Peak output power is measured to be 28.9 dBm with a PAE of 13.3% and a gain of 9.9 dB at 90 GHz, which corresponds to the power density of 1.94 W/mm. To the best of the authors’ knowledge, this result belongs to the highest output power and power density among the reported power amplifier ICs in GaN-on-Si HEMT technologies operating at the W-band.

scholarly journals An overview of chagasic cardiomyopathy: pathogenic importance of oxidative stress

2005 ◽  
Vol 77 (4) ◽  
pp. 695-715 ◽  
Author(s):  
Michele A. Zacks ◽  
Jian-Jun Wen ◽  
Galina Vyatkina ◽  
Vandanajay Bhatia ◽  
Nisha Garg
Keyword(s):  
Oxidative Stress ◽  
Electron Transport Chain ◽  
Common Source ◽  
Oxygen Species ◽  
Pathogen Invasion ◽  
Immune Mediated ◽  
Transport Chain ◽  
Chagasic Cardiomyopathy ◽  
The Common

There is growing evidence to suggest that chagasic myocardia are exposed to sustained oxidative stress-induced injuries that may contribute to disease progression. Pathogen invasion- and replication-mediated cellular injuries and immune-mediated cytotoxic reactions are the common source of reactive oxygen species (ROS) in infectious etiologies. However, our understanding of the source and role of oxidative stress in chagasic cardiomyopathy (CCM) remains incomplete. In this review, we discuss the evidence for increased oxidative stress in chagasic disease, with emphasis on mitochondrial abnormalities, electron transport chain dysfunction and its role in sustaining oxidative stress in myocardium. We discuss the literature reporting the consequences of sustained oxidative stress in CCM pathogenesis.

On the grammaticalization of Japanese verbal negative marker

2018 ◽  
Vol 34 (1) ◽  
pp. 65-101
Author(s):  
Hideki Kishimoto
Keyword(s):  
Present Article ◽  
The Other ◽  
Functional Category ◽  
Common Source ◽  
Trace Back ◽  
Adjectival Inflection ◽  
Negative Adjective ◽  
Idiomatic Expressions ◽  
Negative Marker ◽  
The Common

Abstract In Japanese, the verbal negative marker nai appears in both negated verbs (as a sentential negator) and compound negative adjectives (as an affix). Negative nai used as a sentential negator is a syntactically independent word devoid of adjectival properties despite its adjectival inflection, whereas negative nai appearing in negative adjectives is a derivational affix. On the basis of idiomatic expressions, the present article argues that the lexical word nai ‘null, empty’ has developed into the affix nai while retaining its lexical properties via morphologization. On the other hand, the functional negator nai is argued to have emerged from the same lexical word nai via decategorialization, which induces a shift from a lexical to a functional category. The analysis taking the two uses of nai to trace back to the common source of the lexical negative adjective word nai provides a natural account for why nai has these two totally different uses.

A 4.2-to-5.4 GHz stacked GaAs HBT power amplifier for C-band applications

Circuit World ◽  
2020 ◽  
Vol 46 (4) ◽  
pp. 243-248
Author(s):  
Min Liu ◽  
Panpan Xu ◽  
Jincan Zhang ◽  
Bo Liu ◽  
Liwen Zhang
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
High Power ◽  
High Efficiency ◽  
Common Source ◽  
Power Performance ◽  
Matching Network ◽  
Content Type ◽  
Power Added Efficiency ◽  
Saturated Output Power

Purpose Power amplifiers (PAs) play an important role in wireless communications because they dominate system performance. High-linearity broadband PAs are of great value for potential use in multi-band system implementation. The purpose of this paper is to present a cascode power amplifier architecture to achieve high power and high efficiency requirements for 4.2∼5.4 GHz applications. Design/methodology/approach A common emitter (CE) configuration with a stacked common base configuration of heterojunction bipolar transistor (HBT) is used to achieve high power. T-type matching network is used as input matching network. To increase the bandwidth, the output matching networks are implemented using the two L-networks. Findings By using the proposed method, the stacked PA demonstrates a maximum saturated output power of 26.2 dBm, a compact chip size of 1.17 × 0.59 mm2 and a maximum power-added efficiency of 46.3 per cent. The PA shows a wideband small signal gain with less than 3 dB variation over working frequency. The saturated output power of the proposed PA is higher than 25 dBm between 4.2 and 5.4 GHz. Originality/value The technology adopted for the design of the 4.2-to-5.4 GHz stacked PA is the 2-µm gallium arsenide HBT process. Based on the proposed method, a better power performance of 3 dB improvement can be achieved as compared with the conventional CE or common-source amplifier because of high output stacking impedance.

scholarly journals 1144. Modern Problem, Medieval Cure-Resistant Aeromonas in Medicinal Leeches

2018 ◽  
Vol 5 (suppl_1) ◽  
pp. S344-S344
Author(s):  
Leighanne Olivia Parkes ◽  
Kevin Barker ◽  
Susan M Poutanen ◽  
Jennifer M Grant ◽  
Michael Libman ◽  
...  
Keyword(s):  
Preliminary Investigation ◽  
Pulse Field ◽  
Common Source ◽  
Modern Problem ◽  
Hospital System ◽  
Pulse Field Gel Electrophoresis ◽  
Hospital Systems ◽  
The Common ◽  
Reported Data ◽  
Medicinal Leeches

Abstract Background Medicinal leeches are used primarily in plastic and reconstructive surgery when venous congestion threatens tissue viability. The associated infection risk ranges from 4.1 to 20%. Prophylactic antimicrobials such as fluoroquinolones (FQ) or trimethoprim-sulfamethoxazole (SXT) are recommended and target commonly isolated pathogen and gut symbiont, Aeromonas. However, resistance to these agents has been reported and detected in leeches, including at hospital systems across Canada that acquire their stock from the same supplier. Our objective was to describe the local epidemiology of leech-related Aeromonas resistant to one or more commonly used prophylactic agents, and determine if such resistance originates from the common supplier. Methods Six hospital systems across Canada using leech therapy, purchased from the same supplier, were surveyed. A 5-year retrospective review of all antimicrobial resistant leech-related Aeromonas, derived from clinical, leech, and tank fluid specimens was performed. All Aeromonas resistant to either FQ or SXT were included, and retained frozen isolates from each system were analysed by pulse-field gel electrophoresis (PFGE) using a published Aeromonas protocol. Results All six hospital systems reported leech-related Aeromonas resistant to one or more antimicrobials, totalling 15 isolates. Three systems only reported data from the last year. Four systems used FQ and two used SXT as prophylaxis. Fifteen of 15 were either FQ resistant or intermediate, and four of 15 were SXT resistant. Three of 10 isolates tested for ceftriaxone (CRO) susceptibility were resistant. Five of 15 of the isolates were resistant to two or more agents. Of the two leech quality control isolates, 2/2 were FQ resistant and 1/2 was FQ, SXT and CRO resistant. Only three isolates, each from a different, geographically distinct hospital system, had been retained. PFGE analysis indicated 2/3 are closely related (Figure 1). Conclusion Our preliminary investigation suggests that the presence of FQ and SXT resistance in leech-related Aeromonas might be more common than previously suspected, and that such resistance might originate from a common source. A broader study of the molecular epidemiology of leech-related Aeromonas is warranted. Disclosures All authors: No reported disclosures.

scholarly journals Jesus the Son of God

1909 ◽  
Vol 2 (3) ◽  
pp. 277-309
Author(s):  
Benjamin Wisner Bacon
Keyword(s):  
Great Majority ◽  
Common Element ◽  
Synoptic Gospels ◽  
Common Source ◽  
Son Of God ◽  
The Common

No passage of the Synoptic Gospels throws so much light upon Jesus’ sense of his own mission as that which deals with Knowing the Father and Being Known of Him in Mt. 11 25-27, Lk. 10 21-22. It belongs to the common element of Matthew and Luke unknown in Mark, and in the judgment of the great majority of critics must therefore be referred to a common source of high antiquity. In short, as respects attestation, its claims to authenticity are unexcelled. As respects content, it deals with the all-important matter of Jesus’ doctrine of divine sonship, and yet it seems to stand alone among Synoptic sayings, and to be paralleled only by utterances ascribed to Jesus by the fourth evangelist. But the Johannine discourses give every indication of having been composed by the evangelist himself in order to expound in dialogue form his own deutero-pauline Christology. The only instance in all Synoptic tradition of anything comparable to this apposition of “the Son…the Father,” is Mk. 13 32, Mt. 24 36.Of that day or that hour knoweth no one, not even the angels in heaven, neither the Son, but the Father.

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