Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2019

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 721 - 750 of 29568

Full-Text Articles in Entire DC Network

Acidithiobacillus, R Boden, L Hutt Dec 2019

Acidithiobacillus, R Boden, L Hutt

School of Biological and Marine Sciences

No abstract provided.


Winter Anthropology In Finland: Exploring ‘Green Care’ In Low Light, J Tredinnick-Rowe Dec 2019

Winter Anthropology In Finland: Exploring ‘Green Care’ In Low Light, J Tredinnick-Rowe

Peninsula Medical School

This photo essay discusses some of the methodological issues for medical anthropology in the environmental human health sector, particularly, how season and latitude shape the types of anthropology that can be employed, the activities that can be undertaken, and their aesthetic effect on visual ethnography. The essay recounts the author’s experiences conducting ethnographic studies in the winter months in Finland and discusses the various challenges that environmental conditions produce for researchers.


Rearrangement Operations On Unrooted Phylogenetic Networks, Remie Janssen, Jonathan Klawitter Dec 2019

Rearrangement Operations On Unrooted Phylogenetic Networks, Remie Janssen, Jonathan Klawitter

Theory & Applications of Graphs

Rearrangement operations transform a phylogenetic tree into another one and hence induce a metric on the space of phylogenetic trees. Popular operations for unrooted phylogenetic trees are NNI (nearest neighbour interchange), SPR (subtree prune and regraft), and TBR (tree bisection and reconnection). Recently, these operations have been extended to unrooted phylogenetic networks, which are generalisations of phylogenetic trees that can model reticulated evolutionary relationships. Here, we study global and local properties of spaces of phylogenetic networks under these three operations. In particular, we prove connectedness and asymptotic bounds on the diameters of spaces of different classes of phylogenetic networks, including …


Application Of Photoluminescent Analysis To Control Nanopowders Sinc Selenide And Zinc Oxide, Ilyos Arzimurodovich Rakhmatullaev, Vladimir Semenovich Gorelik, Abdulla, Basic Doctoral Student Of The . E-Mail: Kenjaevich Kurbonov Dec 2019

Application Of Photoluminescent Analysis To Control Nanopowders Sinc Selenide And Zinc Oxide, Ilyos Arzimurodovich Rakhmatullaev, Vladimir Semenovich Gorelik, Abdulla, Basic Doctoral Student Of The . E-Mail: Kenjaevich Kurbonov

Euroasian Journal of Semiconductors Science and Engineering

A method for diagnostics of powdered substances is presented using the example of nanopowders of zinc selenide and zinc oxide. The method is based on the fiber-optic recording of photoluminescence spectra under laser ultraviolet (266 nm) excitation. The developed method can be used to control the quality of a large class of dielectric and semiconductor structures luminescing under the action of ultraviolet radiation


‘Am I Turning Into A Man?’ Experiences Of Pakistani Women With Pcos, Rida E Zehra Zaidi Dec 2019

‘Am I Turning Into A Man?’ Experiences Of Pakistani Women With Pcos, Rida E Zehra Zaidi

MSJ Capstone Projects

According to the National Institutes of Health, 20 – 25% of all regularly ovulating women have PCOS. This disorder has a range of visible symptoms including excessive weight gain, hirsutism, acne, and hair loss among others. These symptoms make it difficult for women with the syndrome to fit the femininity ideals of the society, as it demands female bodies to be slim, smart, hair less, and to have porcelain skin and regular menstrual cycles. Women with PCOS and other health problems in Pakistan spend all their lives fighting unnecessary battles. This struggle has severe impacts on their physical and mental …


Early Child Development Amid The Pandemic, Zain Saeed Siddiqui Dec 2019

Early Child Development Amid The Pandemic, Zain Saeed Siddiqui

MSJ Capstone Projects

I would like to bring to notice the importance of early child development because the early years are crucial for the development especially the skills that are going to help children succeed in life. Basically, I would like to focus on the natural development of the human being from birth to maturity, enabling children to become the transforming elements of society, leading to a harmonious and peaceful world.

Emotional well-being and social competence provide a strong foundation for emerging cognitive abilities, and together they are the bricks and mortar that comprise the foundation of human development.

Generally, development happens in …


Beavers Alter Stream Macroinvertebrate Communities In Northeastern Utah, Susan E. Washko, Brett B. Roper, Trisha Brooke Atwood Dec 2019

Beavers Alter Stream Macroinvertebrate Communities In Northeastern Utah, Susan E. Washko, Brett B. Roper, Trisha Brooke Atwood

Watershed Sciences Faculty Publications

  1. Understanding changes in macroinvertebrate communities is important because they play a large role in stream ecosystem functioning, and they are an important food resource for fish. Beaver‐induced changes to stream morphology could alter macroinvertebrate communities, which in turn could affect food webs and ecosystem function. However, studies investigating the effects of North American beaver activities on macroinvertebrates are rare in the inter‐mountain west, an area with high potential for beaver‐assisted restoration.
  2. The aim of this study was to quantify differences in the macroinvertebrate community between unaltered segments of streams and within beaver ponds in north‐eastern Utah, U.S.A. We assessed macroinvertebrate …


Regional Gene Repression By Dna Double-Strand Breaks In G1 Phase Cells, Caitlin E. Purman, Patrick L. Collins, Sofia I. Porter, Ankita Saini, Harshath Gupta, Barry P. Sleckman, Eugene M. Oltz Dec 2019

Regional Gene Repression By Dna Double-Strand Breaks In G1 Phase Cells, Caitlin E. Purman, Patrick L. Collins, Sofia I. Porter, Ankita Saini, Harshath Gupta, Barry P. Sleckman, Eugene M. Oltz

Open Access Publications

DNA damage responses (DDR) to double-strand breaks (DSBs) alter cellular transcription programs at the genome-wide level. Through processes that are less well understood, DSBs also alter transcriptional responses locally, which may be important for efficient DSB repair. Here, we developed an approach to elucidate the


Dynamics And Control In Spiking Neural Networks, Fuqiang Huang Dec 2019

Dynamics And Control In Spiking Neural Networks, Fuqiang Huang

McKelvey School of Engineering Graduate Student Theses & Dissertations

In the brain, neurons (brain cells) produce electrical impulses, or spikes, that are thought to be the substrate of information processing and computation. Through enigmatic processes, these spikes are ultimately decoded into perceptions and actions. The nature of this encoding and decoding is one of the most pervasive questions in theoretical neuroscience. In other words, what are the specific functions enacted by neural circuits, through their biophysics and dynamics? This thesis examines the dynamics of neural networks from the perspective of control theory and engineering. The pivotal concept is that of the normative synthesis of neural circuits, wherein neural dynamics …


Longitudinal Acoustic Traps: Design, Fabrication, And Evaluation For Biological Applications, Michael Moore Binkley Dec 2019

Longitudinal Acoustic Traps: Design, Fabrication, And Evaluation For Biological Applications, Michael Moore Binkley

McKelvey School of Engineering Graduate Student Theses & Dissertations

Acoustofluidics combine ultrasonic actuation with small-volume microfluidic channels to enable precise, contactless object manipulation for a range of applications from serial chemical processing to blood component separation and single-cell analysis. Micron- to millimeter-scale vibrational waves generate reproducible pressure fields within the microfluidic channels and chambers. By exploiting the material property mismatch between a particle (polymeric and silica beads, cells, etc.) and a suspending fluid, the acoustic radiation force is used to move particles toward regions of low (nodes) or high pressure (antinodes). An understanding of these field-particle interactions is applied to design and implement complicated channel architectures for preferential segregation …


Rhodococcus Opacus Pd630 Genetic Tool Development To Enable The Conversion Of Biomass, Drew Michael Delorenzo Dec 2019

Rhodococcus Opacus Pd630 Genetic Tool Development To Enable The Conversion Of Biomass, Drew Michael Delorenzo

McKelvey School of Engineering Graduate Student Theses & Dissertations

The discovery of fossil fuels facilitated a new era in human history and allowed many firsts, such as the mass production of goods, the ability to travel and communicate long distances, the formation of population dense cities, and unprecedented improvements in quality of life. Alternative sources of energy and chemicals are needed, however, as hydrocarbon reserves continue to deplete and the effects of burning fossils on the planet become better understood. Lignocellulosic biomass is the most abundant raw material in the world and a viable alternative to petroleum-derived products. The pre-treatment of lignocellulose (e.g., thermocatalytic depolymerization, enzymatic hydrolysis, pyrolysis, etc.) …


Three-Dimensional Image Reconstruction In Transcranial Photoacoustic Computed Tomography, Joemini Poudel Dec 2019

Three-Dimensional Image Reconstruction In Transcranial Photoacoustic Computed Tomography, Joemini Poudel

McKelvey School of Engineering Graduate Student Theses & Dissertations

Photoacoustic computed tomography (PACT) is an emerging imaging modality that exploitsoptical contrast and ultrasonic detection principles to form images of the photoacousticallyinduced initial pressure distribution within tissue. The PACT reconstruction problemcorresponds to an inverse source problem in which the initial pressure distribution is recoveredfrom measurements of the radiated pressure wavefield. A major challenge in transcranialPACT brain imaging is compensation for aberrations in the measured data due to the presenceof the skull. Ultrasonic waves undergo absorption, scattering and longitudinal-to-shear wavemode conversion as they propagate through the skull. To properly account for these effects, awave-equation-based inversion method should be employed that can …


Structural And Tissue-Level Adaptations Of Lumbar Intervertebral Discs In Humans With Inducible Low Back Pain Symptoms, Christian Isaiah Weber Dec 2019

Structural And Tissue-Level Adaptations Of Lumbar Intervertebral Discs In Humans With Inducible Low Back Pain Symptoms, Christian Isaiah Weber

McKelvey School of Engineering Graduate Student Theses & Dissertations

Low back pain (LBP) is a devastating musculoskeletal ailment that impacts majority of the global population. Up to 95% of cases are considered nonspecific where the origin is unclear. Although there is a diagnosis with these cases, there lacks specificity that would help individuals with treatment and pain management. Imaging techniques such as magnetic resonance imaging (MRI) are primarily utilized in the diagnosis of LBP as it illuminates internal structures of the spine. One important structure clearly identified with MRI is the intervertebral disc (IVD) that is susceptible to injury and disease. Further, diagnostic imaging is performed lying down where …


Aggression In August Wilson’S King Hedley Ii, Asma’A Mohannad Saad, Muthanna Mohammad Sultan Dec 2019

Aggression In August Wilson’S King Hedley Ii, Asma’A Mohannad Saad, Muthanna Mohammad Sultan

Alustath Journal for Human and Social Sciences

The need for investigating the stereotypical image of the African American males as aggressive, criminal individuals brings this research to address this sensitive issue. But the stereotypes of the African American have drawn the attention of many black writers and psychiatrists who tried to dismantle these images by revealing the social, psychological, and socioeconomic factors which contribute in this phenomenon. This paper highlights the reasons that drive the black males to adopt aggression through analyzing August Wilson’s King Hedley II (1999). In this play, Wilson portrays the widely spread aggression and its negative consequences. He also goes a step further …


Ecocritical Consciousness In Shakespeare’S The Winter’S Tale, Birzo Abdulkadir Mohammad, Azad Hamad Sharif Dec 2019

Ecocritical Consciousness In Shakespeare’S The Winter’S Tale, Birzo Abdulkadir Mohammad, Azad Hamad Sharif

Alustath Journal for Human and Social Sciences

The present study focuses on the eco critical elements in The Winter’s Tale (1610-1611) by William Shakespeare (1564 –1616), which is an outstanding example of the literary writing communicating ecological consciousness. Having examined William Shakespeare’s contribution to understanding nature it can be stated that nature is one of the key concepts of the author. He was highly aware of the nature and humans connection, importance of nature as both utilitarian and spiritual object. That is why Shakespeare’s concept of nature is colored with mainly positive tones. The most typical words for natural world are “fine” and “beauty”. In contrast to …


Gender Differences In Early Communication, Language Acquisition And Development: A Descriptive Study, رشا عبد الرضا سعيد, رشا عبد المنعم عزيز Dec 2019

Gender Differences In Early Communication, Language Acquisition And Development: A Descriptive Study, رشا عبد الرضا سعيد, رشا عبد المنعم عزيز

Alustath Journal for Human and Social Sciences

Parents pay a significant attention to the first words children utter. However, first words are not the actual beginning of communication. Much earlier, babies begin to communicate their feeling via making eye contact, pointing, crying, squealing, and other gestures. Furthermore, they perceive language earlier than making others understand them. The aim of this paper is to tackle the variations between the two sexes starting from the stages of language acquisition in normal children, the differences between the two genders in language vocalization within each stage. Next, the distinctions in acquiring a particular communicative competence and the causes behind this difference …


The Effect Of Using Cooperative Learning Strategy In The Achievement Of Students In The Third Stage Of The Department Of English Language In The Field Of Educational Guidance And Mental Health, ناصر خضير سكران Dec 2019

The Effect Of Using Cooperative Learning Strategy In The Achievement Of Students In The Third Stage Of The Department Of English Language In The Field Of Educational Guidance And Mental Health, ناصر خضير سكران

Alustath Journal for Human and Social Sciences

The current research aims at identifying the effect of using cooperative learning strategy in the achievement of students in the third stage of the English language section in the field of educational guidance and mental health, as the current research sought to answer the following hypothesis.

There is a statistically significant difference at the level of (0.05) in the achievement of students of the third stage of the English language section in the educational guidance and mental health, who study according to the cooperative learning strategy and students who study the same material in the traditional way. The original research …


Pertumbuhan, Hasil Dan Karakter Fisiologis Padi Yang Diberi Pupuk Hayati Pada Pertanaman Kelapa Sawit Belum Menghasilkan I, Annisa Nuraisah, Cucu Suherman, Mira Ariyanti, Anne Nuraini, Mochamad Arief Soleh Dec 2019

Pertumbuhan, Hasil Dan Karakter Fisiologis Padi Yang Diberi Pupuk Hayati Pada Pertanaman Kelapa Sawit Belum Menghasilkan I, Annisa Nuraisah, Cucu Suherman, Mira Ariyanti, Anne Nuraini, Mochamad Arief Soleh

Jurnal Kultivasi

ruang terbuka diantara tanaman kelapa sawit belum menghasilkan dapat dimanfaatkan untuk budidaya tanaman pangan, khususnya padi sebagai tanaman sela dalam rangka mendukung program ketahanan nasional. Penelitian dilakukan dengan tujuan untuk memperoleh dosis pupuk hayati yang berpengaruh paling baik terhadap pertumbuhan, hasil, dan karakter fisiologis tanaman padi yang ditanam pada pertanaman kelapa sawit TBM 1 serta melihat dampak penanaman padi sebagai tanaman sela terhadap pertumbuhan kelapa sawit. Percobaan dilakukan di Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran, pada bulan Desember 2017 sampai bulan April 2018. Percobaan disusun menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari enam perlakuan dosis pupuk hayati, yaitu …


Development Of High-Speed Photoacoustic Imaging Technology And Its Applications In Biomedical Research, Yun He Dec 2019

Development Of High-Speed Photoacoustic Imaging Technology And Its Applications In Biomedical Research, Yun He

McKelvey School of Engineering Graduate Student Theses & Dissertations

Photoacoustic (PA) tomography (PAT) is a novel imaging modality that combines the fine lateral resolution from optical imaging and the deep penetration from ultrasonic imaging, and provides rich optical-absorption–based images. PAT has been widely used in extracting structural and functional information from both ex vivo tissue samples to in vivo animals and humans with different length scales by imaging various endogenous and exogenous contrasts at the ultraviolet to infrared spectrum. For example, hemoglobin in red blood cells is of particular interest in PAT since it is one of the dominant absorbers in tissue at the visible wavelength.The main focus of …


Cytogps: A Web-Enabled Karyotype Analysis Tool For Cytogenetics, Zachary B Abrams, Lin Zhang, Lynne V Abruzzo, Nyla A Heerema, Suli Li, Tom Dillon, Ricky Rodriguez, Kevin R Coombes, Philip R O Payne Dec 2019

Cytogps: A Web-Enabled Karyotype Analysis Tool For Cytogenetics, Zachary B Abrams, Lin Zhang, Lynne V Abruzzo, Nyla A Heerema, Suli Li, Tom Dillon, Ricky Rodriguez, Kevin R Coombes, Philip R O Payne

Open Access Publications

SUMMARY: Karyotype data are the most common form of genetic data that is regularly used clinically. They are collected as part of the standard of care in many diseases, particularly in pediatric and cancer medicine contexts. Karyotypes are represented in a unique text-based format, with a syntax defined by the International System for human Cytogenetic Nomenclature (ISCN). While human-readable, ISCN is not intrinsically machine-readable. This limitation has prevented the full use of complex karyotype data in discovery science use cases. To enhance the utility and value of karyotype data, we developed a tool named CytoGPS. CytoGPS first parses ISCN karyotypes …


Christianity + Schooling On Nature Versus Culture In Amazonia, Aparecida M. N. Vilaça Dec 2019

Christianity + Schooling On Nature Versus Culture In Amazonia, Aparecida M. N. Vilaça

Tipití: Journal of the Society for the Anthropology of Lowland South America

Based on the analysis of Evangelical Biblical translations, as well as on the school writing of Wari' (Southwestern Amazonia) students, produced in indigenous secondary school classrooms and at the intercultural university, this article aims to show how, in both church and school, a nature separate from humans is invented with which they should relate in a utilitarian and also contemplative way. Simultaneously nature’s opposite is invented–a culture that excludes animals and subjects them.


Tubes And Androgyny: Comment On "Thinking Through Tubes", Françoise Barbira Freedman Dec 2019

Tubes And Androgyny: Comment On "Thinking Through Tubes", Françoise Barbira Freedman

Tipití: Journal of the Society for the Anthropology of Lowland South America

In this comment on Stephen Hugh-Jones’s "Thinking Through Tubes" Françoise Barbira Freedman offers a feminist meditation on the semiotics of androgyny in Northwest Amazonian shamanism, ritual life and mythology. By focusing on processes of detotalization and retotalization that move beings from an androgynous state to a single-sex identity and back again, Barbira Freedman reveals a dynamic "one sex, two genders model of androgyny" that could not be further from a concept of androgyny as blurred gender. These movements in and out of a one sex state are largely the preserve of men so that androgynous features of the cosmos are …


Cosmology And Practice In Amazonia: The Inspiring Career Of Stephen Hugh-Jones, Chloe Nahum-Claudel, Olivier Allard Dec 2019

Cosmology And Practice In Amazonia: The Inspiring Career Of Stephen Hugh-Jones, Chloe Nahum-Claudel, Olivier Allard

Tipití: Journal of the Society for the Anthropology of Lowland South America

Stephen Hugh-Jones’s ethnographic and collaborative engagement with the peoples of the Pirá-Paraná and, more widely, the Vaupés and Upper Rio Negro today spans 50 years. In this Introduction we chart the evolution of Hugh-Jones’s hybrid identity as iconoclast scholar, knowledgeable elder, and long-term collaborator. A biographical sketch identifies phases in this anthropological life: that of the ethnographer and initiate, steeped in the intellectual world of Barasana shaman-priests; that of lecturer and theorist in anthropology; and that of areal specialist, developing a synthesis of the ethnography of North West Amazonia through an engagement with Brazilian and indigenous intellectuals. We characterize the …


First-Personal Body Aesthetics As Affirmations Of Subjectivity, Madeline Martin-Seaver Dec 2019

First-Personal Body Aesthetics As Affirmations Of Subjectivity, Madeline Martin-Seaver

Contemporary Aesthetics (Journal Archive)

This paper redirects some of the philosophical discussion of sexual objectification. Rather than contributing further to debates over what constitutes objectification and whether it is harmful, I argue that aesthetic experience is a useful tool for resisting objectification. Attending to our embodied experiences provides immediate evidence that we are subjects; aesthetically attending to that evidence is a way of valuing it. I consider the human body as an aesthetic site, then as an ethico-aesthetic site, and finally as a site of resistance. In addition to deepening accounts of body aesthetic experience, this paper helps frame human bodies as integral to …


Habitat Selection Of The Spotfin Killifish In Coastal Connecticut, Megan L. Upp Dec 2019

Habitat Selection Of The Spotfin Killifish In Coastal Connecticut, Megan L. Upp

Master's Theses

The Spotfin Killifish (Fundulus luciae) is a salt marsh inhabitant, occupying a habitat subject to change from 1) historic changes from mosquito ditching practices to 2) more contemporary anthropogenic changes from sea level rise and coastal development. Though thought to be a habitat specialist along the Atlantic coast, Spotfin Killifish resource selection has yet to be quantified. Spotfin Killifish presence or absence data was recorded with measured habitat characteristics at sites along a 14 km stretch of coastal Connecticut. Three hypotheses were proposed to create probabilistic models that could predict Spotfin Killifish presence or absence using logistic regression: …


Allies In Training: The Construction & Management Of Cis Allyship At State University, Davida J. Schiffer Dec 2019

Allies In Training: The Construction & Management Of Cis Allyship At State University, Davida J. Schiffer

Master's Theses

Many universities provide LGBT Ally Training Programs, but who are the allies who attend them? My research examines how participants conceptualize cis allyship and how they enact it in their professional and personal lives. In describing the gendered and racialized role of cis allyship, I situate my analysis in theories of doing gender & performativity (West & Zimmerman 1987; Johnson 2013) and the scholarship around white allies in academic diversity narratives (Bonilla-Silva 2006; Collins & Bilge 2016). Focusing on an Ally Training program at State University, I conducted an ethnography of 4 Ally Trainings and performed 21 interviews with 12 …


Atrial Fibrillation Detection From Smartwatch Based Photoplethysmography Signals, Syed Khairul Bashar Dec 2019

Atrial Fibrillation Detection From Smartwatch Based Photoplethysmography Signals, Syed Khairul Bashar

Master's Theses

Detection of atrial fibrillation (AF) from a wrist watch photoplethysmography (PPG) signal is important because the wrist watch form factor enables long term continuous monitoring of arrhythmia in an easy and non-invasive manner. We have developed a novel method not only to detect AF from a smart wrist watch PPG signal, but also to determine whether the recorded PPG signal is corrupted by motion artifacts or not. In order to detect the motion and noise artifacts from PPG signal, we have used both the accelerometer signal and variable frequency complex demodulation based time-frequency analysis of the PPG signal. After the …


The Effect Of The (Pdeode) Strategy On Achievement And Development Of Creative Motivation Among Fifth-Grade Biological Science Students In Physics, Nur Naeem Eajil Dec 2019

The Effect Of The (Pdeode) Strategy On Achievement And Development Of Creative Motivation Among Fifth-Grade Biological Science Students In Physics, Nur Naeem Eajil

Uruk Journal of Human Sciences

The objective of the present study is to identify the effect of PDEODE strategy on the achievement and development of the creative tendency of female students in the fifth biological grade in physics.


A Microfluidic Platform To Investigate The Mechanism By Which Gdnf Overexpression In Schwann Cells Causes Neuronal Axon Entrapment, Ze Zhong Wang Dec 2019

A Microfluidic Platform To Investigate The Mechanism By Which Gdnf Overexpression In Schwann Cells Causes Neuronal Axon Entrapment, Ze Zhong Wang

McKelvey School of Engineering Graduate Student Theses & Dissertations

Twenty million Americans suffer from peripheral nerve injury (PNI) caused by trauma and medical disorders, with approximately $150 billion spent in annual health-care dollars in the United States. Even with proper surgical reconstruction, less than 50% of the patients achieve satisfactory functional recovery. The gold standard surgical repair for long gaps (>3cm) is the autologous nerve graft, despite its disadvantages such as donor site morbidity, risk of infection, and increased cost. Alternative methods, such as acellular nerve grafts (ANA), are ineffective for large lesion gaps because of the lack of cells and regeneration factors. Recent efforts have been focused …


Desert Depressions And Their Investment As Natural Reserves To Protect Biological Diversity (Plants, Animals) In The Muthanna Desert, Wala Kamil Sabri Dec 2019

Desert Depressions And Their Investment As Natural Reserves To Protect Biological Diversity (Plants, Animals) In The Muthanna Desert, Wala Kamil Sabri

Uruk Journal of Human Sciences

Al-Muthanna desert is characterized by an important biological diversity despite the characteristics of the desert environment that characterizes it, as it is characterized by the plateau nature and the capacity of the area it occupies (90.7%) of the total area of ​​the province of Muthanna. The nature of its surface varies between the plain and plain region in the north and the lowers in the north and center and the sandy region in its eastern parts, while the rocky area occupied by natural pastures extends to large areas in the middle and south of the desert and interspersed with lowlands …